From 03ca9b753958fffa9ad80e179584336506f03acf Mon Sep 17 00:00:00 2001
From: "Francesca L. Bleken" <francesca.l.bleken@sintef.no>
Date: Thu, 19 May 2022 13:22:15 +0200
Subject: [PATCH 1/2] visualisation with cytoscapewidget improved with
 documentation.

Graph given as parameter should be generated with edgelabel = True
(this was default previously).
---
 ontopy/graph.py | 46 +++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 39 insertions(+), 7 deletions(-)

diff --git a/ontopy/graph.py b/ontopy/graph.py
index a9135fc98..81ca9ac60 100644
--- a/ontopy/graph.py
+++ b/ontopy/graph.py
@@ -6,12 +6,15 @@
 import os
 import re
 import tempfile
+import warnings
+from typing import Optional
 import defusedxml.ElementTree as ET
-
 import owlready2
 import graphviz
 
 from ontopy.utils import asstring, get_label
+from ontopy.ontology import Ontology
+from ontopy.utils import EMMOntoPyException
 
 typenames = (
     owlready2.class_construct._restriction_type_2_label  # pylint: disable=protected-access
@@ -1046,11 +1049,25 @@ def get_deps(iri, excl=None):
 
 
 def cytoscapegraph(
-    graph, onto=None, infobox=None
+    graph: OntoGraph,
+    onto: Optional[Ontology] = None,
+    infobox: str = None,
+    force: bool = False,
 ):  # pylint: disable=too-many-locals,too-many-statements
     """Returns and instance of icytoscape-figure for an
-    instance Graph of OntoGraph, the accomanying ontology
-    is required for mouse actions"""
+    instance Graph of OntoGraph, the accompanying ontology
+    is required for mouse actions.
+    Args:
+            graph: graph generated with OntoGraph with edgelabels=True.
+            onto: ontology to be used for mouse actions.
+            infobox: "left" or "right". Placement of infbox with
+                     respect to graph.
+            force: force generate graph withour correct edgelabels.
+    Returns:
+            cytoscapewidget with graph and infobox to be visualized
+            in jupyter lab.
+
+    """
     # pylint: disable=import-error,import-outside-toplevel
     from ipywidgets import Output, VBox, GridspecLayout
     from IPython.display import display, Image
@@ -1069,9 +1086,24 @@ def cytoscapegraph(
 
     data = cytoscape_data(pydot_graph)["elements"]
     for datum in data["edges"]:
-        datum["data"]["label"] = (
-            datum["data"]["label"].rsplit(" ", 1)[0].lstrip('"')
-        )
+        try:
+            datum["data"]["label"] = (
+                datum["data"]["label"].rsplit(" ", 1)[0].lstrip('"')
+            )
+        except KeyError as err:
+            if not force:
+                raise EMMOntoPyException(
+                    "Edge label is not defined. Are you sure that the OntoGraph"
+                    "instance you provided was generated with "
+                    "´edgelabels=True´?"
+                ) from err
+            warnings.warn(
+                "ARROWS WILL NOT BE DISPLAYED CORRECTLY. "
+                "Edge label is not defined. Are you sure that the OntoGraph "
+                "instance you provided was generated with ´edgelabels=True´?"
+            )
+            datum["data"]["label"] = ""
+
         lab = datum["data"]["label"].replace("Inverse(", "").rstrip(")")
         try:
             datum["data"]["colour"] = colours[lab]

From 877cddfc040e57701c9fea540e960847dcca9fe9 Mon Sep 17 00:00:00 2001
From: "Francesca L. Bleken" <francesca.l.bleken@sintef.no>
Date: Mon, 23 May 2022 10:28:25 +0200
Subject: [PATCH 2/2] Added info about returned data from cytoscapegraph

---
 .../jupyter-visualization/emmographs.ipynb    | 290 ++++++++----------
 ontopy/graph.py                               |   9 +-
 2 files changed, 137 insertions(+), 162 deletions(-)

diff --git a/examples/jupyter-visualization/emmographs.ipynb b/examples/jupyter-visualization/emmographs.ipynb
index 15b98d48e..1bd33ad4c 100644
--- a/examples/jupyter-visualization/emmographs.ipynb
+++ b/examples/jupyter-visualization/emmographs.ipynb
@@ -3,6 +3,9 @@
   {
    "cell_type": "code",
    "execution_count": 1,
+   "id": "a01799c2",
+   "metadata": {},
+   "outputs": [],
    "source": [
     "from ontopy import get_ontology\n",
     "#import networkx as nx\n",
@@ -11,108 +14,93 @@
     "#import pydotplus\n",
     "#import ipycytoscape\n",
     "#import ipywidgets as widgets"
-   ],
-   "outputs": [],
-   "metadata": {}
+   ]
   },
   {
    "cell_type": "code",
    "execution_count": 2,
+   "id": "f9917c47",
+   "metadata": {},
+   "outputs": [],
    "source": [
     "onto = get_ontology('emmo-inferred').load()"
-   ],
-   "outputs": [],
-   "metadata": {}
+   ]
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 6,
+   "id": "aead21d4",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "image/svg+xml": "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n<!-- Generated by graphviz version 2.43.0 (0)\n -->\n<!-- Title: %3 Pages: 1 -->\n<svg width=\"1126pt\" height=\"305pt\"\n viewBox=\"0.00 0.00 1125.94 305.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 301)\">\n<title>%3</title>\n<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-301 1121.94,-301 1121.94,4 -4,4\"/>\n<!-- ElementaryParticle -->\n<g id=\"node1\" class=\"node\">\n<title>ElementaryParticle</title>\n<g id=\"a_node1\"><a xlink:href=\"http://emmo.info/emmo/middle/physicalistic#EMMO_c26a0340_d619_4928_b1a1_1a04e88bb89d\" xlink:title=\"ElementaryParticle\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" stroke-width=\"2\" cx=\"827.05\" cy=\"-18\" rx=\"100.98\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"827.05\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\">ElementaryParticle</text>\n</a>\n</g>\n</g>\n<!-- Physicalistic -->\n<g id=\"node11\" class=\"node\">\n<title>Physicalistic</title>\n<g id=\"a_node11\"><a xlink:href=\"http://emmo.info/emmo/middle/physicalistic#EMMO_98ada9d8_f1c8_4f13_99b5_d890f5354152\" xlink:title=\"Physicalistic\">\n<ellipse fill=\"#ffc880\" stroke=\"black\" cx=\"904.05\" cy=\"-105\" rx=\"68.79\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"904.05\" y=\"-101.3\" font-family=\"Times,serif\" font-size=\"14.00\">Physicalistic</text>\n</a>\n</g>\n</g>\n<!-- ElementaryParticle&#45;&gt;Physicalistic -->\n<g id=\"edge4\" class=\"edge\">\n<title>ElementaryParticle&#45;&gt;Physicalistic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M842.63,-36.2C853.94,-48.69 869.41,-65.76 881.99,-79.65\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"879.7,-82.34 889.01,-87.4 884.89,-77.64 879.7,-82.34\"/>\n<text text-anchor=\"middle\" x=\"882.05\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Existent -->\n<g id=\"node2\" class=\"node\">\n<title>Existent</title>\n<g id=\"a_node2\"><a xlink:href=\"http://emmo.info/emmo/middle/reductionistic#EMMO_52211e5e_d767_4812_845e_eb6b402c476a\" xlink:title=\"Existent\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" stroke-width=\"2\" cx=\"50.05\" cy=\"-18\" rx=\"50.09\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"50.05\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\">Existent</text>\n</a>\n</g>\n</g>\n<!-- Reductionistic -->\n<g id=\"node5\" class=\"node\">\n<title>Reductionistic</title>\n<g id=\"a_node5\"><a xlink:href=\"http://emmo.info/emmo/middle/reductionistic#EMMO_15db234d_ecaf_4715_9838_4b4ec424fb13\" xlink:title=\"Reductionistic\">\n<ellipse fill=\"#ffc880\" stroke=\"black\" cx=\"154.05\" cy=\"-105\" rx=\"77.19\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"154.05\" y=\"-101.3\" font-family=\"Times,serif\" font-size=\"14.00\">Reductionistic</text>\n</a>\n</g>\n</g>\n<!-- Existent&#45;&gt;Reductionistic -->\n<g id=\"edge13\" class=\"edge\">\n<title>Existent&#45;&gt;Reductionistic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M69.61,-34.99C85.53,-48 108.2,-66.53 126.05,-81.12\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"123.9,-83.89 133.86,-87.5 128.33,-78.47 123.9,-83.89\"/>\n<text text-anchor=\"middle\" x=\"120.05\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- State -->\n<g id=\"node3\" class=\"node\">\n<title>State</title>\n<g id=\"a_node3\"><a xlink:href=\"http://emmo.info/emmo/middle/reductionistic#EMMO_36c79456_e29c_400d_8bd3_0eedddb82652\" xlink:title=\"State\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" stroke-width=\"2\" cx=\"154.05\" cy=\"-18\" rx=\"36\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"154.05\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\">State</text>\n</a>\n</g>\n</g>\n<!-- State&#45;&gt;Reductionistic -->\n<g id=\"edge8\" class=\"edge\">\n<title>State&#45;&gt;Reductionistic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M154.05,-36.2C154.05,-47.84 154.05,-63.45 154.05,-76.76\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"150.55,-76.82 154.05,-86.82 157.55,-76.82 150.55,-76.82\"/>\n<text text-anchor=\"middle\" x=\"165.05\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Acoustical -->\n<g id=\"node4\" class=\"node\">\n<title>Acoustical</title>\n<g id=\"a_node4\"><a xlink:href=\"http://emmo.info/emmo/middle/perceptual#EMMO_4b3afb22_27cf_4ce3_88bc_492bfccb546b\" xlink:title=\"Acoustical\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" stroke-width=\"2\" cx=\"266.05\" cy=\"-18\" rx=\"57.69\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"266.05\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\">Acoustical</text>\n</a>\n</g>\n</g>\n<!-- Perceptual -->\n<g id=\"node7\" class=\"node\">\n<title>Perceptual</title>\n<g id=\"a_node7\"><a xlink:href=\"http://emmo.info/emmo/middle/perceptual#EMMO_649bf97b_4397_4005_90d9_219755d92e34\" xlink:title=\"Perceptual\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"398.05\" cy=\"-105\" rx=\"60.39\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"398.05\" y=\"-101.3\" font-family=\"Times,serif\" font-size=\"14.00\">Perceptual</text>\n</a>\n</g>\n</g>\n<!-- Acoustical&#45;&gt;Perceptual -->\n<g id=\"edge10\" class=\"edge\">\n<title>Acoustical&#45;&gt;Perceptual</title>\n<path fill=\"none\" stroke=\"black\" d=\"M289.95,-34.39C311.03,-47.97 341.95,-67.88 365.32,-82.93\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"363.57,-85.96 373.87,-88.43 367.36,-80.08 363.57,-85.96\"/>\n<text text-anchor=\"middle\" x=\"351.05\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Perspective -->\n<g id=\"node13\" class=\"node\">\n<title>Perspective</title>\n<g id=\"a_node13\"><a xlink:href=\"http://emmo.info/emmo/top#EMMO_49267eba_5548_4163_8f36_518d65b583f9\" xlink:title=\"Perspective\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" stroke-width=\"2\" cx=\"466.05\" cy=\"-192\" rx=\"64.99\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"466.05\" y=\"-188.3\" font-family=\"Times,serif\" font-size=\"14.00\">Perspective</text>\n</a>\n</g>\n</g>\n<!-- Reductionistic&#45;&gt;Perspective -->\n<g id=\"edge3\" class=\"edge\">\n<title>Reductionistic&#45;&gt;Perspective</title>\n<path fill=\"none\" stroke=\"black\" d=\"M202.45,-119.19C258.92,-134.57 352.06,-159.95 411.17,-176.05\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"410.5,-179.5 421.07,-178.75 412.34,-172.74 410.5,-179.5\"/>\n<text text-anchor=\"middle\" x=\"340.05\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Participant -->\n<g id=\"node6\" class=\"node\">\n<title>Participant</title>\n<g id=\"a_node6\"><a xlink:href=\"http://emmo.info/emmo/middle/holistic#EMMO_49804605_c0fe_4538_abda_f70ba1dc8a5d\" xlink:title=\"Participant\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" stroke-width=\"2\" cx=\"534.05\" cy=\"-18\" rx=\"61.99\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"534.05\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\">Participant</text>\n</a>\n</g>\n</g>\n<!-- Holistic -->\n<g id=\"node10\" class=\"node\">\n<title>Holistic</title>\n<g id=\"a_node10\"><a xlink:href=\"http://emmo.info/emmo/middle/holistic#EMMO_0277f24a_ea7f_4917_81b7_fb0406c8fc62\" xlink:title=\"Holistic\">\n<ellipse fill=\"#ffc880\" stroke=\"black\" cx=\"534.05\" cy=\"-105\" rx=\"46.29\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"534.05\" y=\"-101.3\" font-family=\"Times,serif\" font-size=\"14.00\">Holistic</text>\n</a>\n</g>\n</g>\n<!-- Participant&#45;&gt;Holistic -->\n<g id=\"edge7\" class=\"edge\">\n<title>Participant&#45;&gt;Holistic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M534.05,-36.2C534.05,-47.84 534.05,-63.45 534.05,-76.76\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"530.55,-76.82 534.05,-86.82 537.55,-76.82 530.55,-76.82\"/>\n<text text-anchor=\"middle\" x=\"545.05\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Perceptual&#45;&gt;Perspective -->\n<g id=\"edge9\" class=\"edge\">\n<title>Perceptual&#45;&gt;Perspective</title>\n<path fill=\"none\" stroke=\"black\" d=\"M411.48,-122.79C421.45,-135.25 435.19,-152.43 446.39,-166.43\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"443.66,-168.62 452.64,-174.24 449.12,-164.25 443.66,-168.62\"/>\n<text text-anchor=\"middle\" x=\"448.05\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Graphical -->\n<g id=\"node8\" class=\"node\">\n<title>Graphical</title>\n<g id=\"a_node8\"><a xlink:href=\"http://emmo.info/emmo/middle/perceptual#EMMO_c74da218_9147_4f03_92d1_8894abca55f3\" xlink:title=\"Graphical\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" stroke-width=\"2\" cx=\"398.05\" cy=\"-18\" rx=\"55.79\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"398.05\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\">Graphical</text>\n</a>\n</g>\n</g>\n<!-- Graphical&#45;&gt;Perceptual -->\n<g id=\"edge5\" class=\"edge\">\n<title>Graphical&#45;&gt;Perceptual</title>\n<path fill=\"none\" stroke=\"black\" d=\"M398.05,-36.2C398.05,-47.84 398.05,-63.45 398.05,-76.76\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"394.55,-76.82 398.05,-86.82 401.55,-76.82 394.55,-76.82\"/>\n<text text-anchor=\"middle\" x=\"409.05\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Process -->\n<g id=\"node9\" class=\"node\">\n<title>Process</title>\n<g id=\"a_node9\"><a xlink:href=\"http://emmo.info/emmo/middle/holistic#EMMO_43e9a05d_98af_41b4_92f6_00f79a09bfce\" xlink:title=\"Process\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" stroke-width=\"2\" cx=\"661.05\" cy=\"-18\" rx=\"46.59\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"661.05\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\">Process</text>\n</a>\n</g>\n</g>\n<!-- Process&#45;&gt;Holistic -->\n<g id=\"edge1\" class=\"edge\">\n<title>Process&#45;&gt;Holistic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M638.63,-34C618.05,-47.78 587.37,-68.31 564.56,-83.58\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"562.6,-80.68 556.23,-89.15 566.49,-86.5 562.6,-80.68\"/>\n<text text-anchor=\"middle\" x=\"617.05\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Holistic&#45;&gt;Perspective -->\n<g id=\"edge12\" class=\"edge\">\n<title>Holistic&#45;&gt;Perspective</title>\n<path fill=\"none\" stroke=\"black\" d=\"M520.93,-122.39C510.93,-134.89 496.99,-152.31 485.67,-166.47\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"482.86,-164.38 479.35,-174.37 488.33,-168.75 482.86,-164.38\"/>\n<text text-anchor=\"middle\" x=\"516.05\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Physicalistic&#45;&gt;Perspective -->\n<g id=\"edge6\" class=\"edge\">\n<title>Physicalistic&#45;&gt;Perspective</title>\n<path fill=\"none\" stroke=\"black\" d=\"M850.34,-116.42C768.71,-132.26 613.82,-162.32 527.7,-179.03\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"526.96,-175.61 517.81,-180.95 528.29,-182.49 526.96,-175.61\"/>\n<text text-anchor=\"middle\" x=\"723.05\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Field -->\n<g id=\"node12\" class=\"node\">\n<title>Field</title>\n<g id=\"a_node12\"><a xlink:href=\"http://emmo.info/emmo/middle/physicalistic#EMMO_70dac51e_bddd_48c2_8a98_7d8395e91fc2\" xlink:title=\"Field\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" stroke-width=\"2\" cx=\"980.05\" cy=\"-18\" rx=\"34.39\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"980.05\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\">Field</text>\n</a>\n</g>\n</g>\n<!-- Field&#45;&gt;Physicalistic -->\n<g id=\"edge2\" class=\"edge\">\n<title>Field&#45;&gt;Physicalistic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M966.11,-34.59C954.83,-47.21 938.74,-65.2 925.77,-79.7\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"922.99,-77.56 918.94,-87.35 928.21,-82.22 922.99,-77.56\"/>\n<text text-anchor=\"middle\" x=\"958.05\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Physical -->\n<g id=\"node15\" class=\"node\">\n<title>Physical</title>\n<g id=\"a_node15\"><a xlink:href=\"http://emmo.info/emmo/top/physical#EMMO_c5ddfdba_c074_4aa4_ad6b_1ac4942d300d\" xlink:title=\"Physical\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"466.05\" cy=\"-279\" rx=\"49.29\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"466.05\" y=\"-275.3\" font-family=\"Times,serif\" font-size=\"14.00\">Physical</text>\n</a>\n</g>\n</g>\n<!-- Perspective&#45;&gt;Physical -->\n<g id=\"edge14\" class=\"edge\">\n<title>Perspective&#45;&gt;Physical</title>\n<path fill=\"none\" stroke=\"black\" d=\"M466.05,-210.2C466.05,-221.84 466.05,-237.45 466.05,-250.76\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"462.55,-250.82 466.05,-260.82 469.55,-250.82 462.55,-250.82\"/>\n<text text-anchor=\"middle\" x=\"477.05\" y=\"-231.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Matter -->\n<g id=\"node14\" class=\"node\">\n<title>Matter</title>\n<g id=\"a_node14\"><a xlink:href=\"http://emmo.info/emmo/middle/physicalistic#EMMO_5b2222df_4da6_442f_8244_96e9e45887d1\" xlink:title=\"Matter\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" stroke-width=\"2\" cx=\"1075.05\" cy=\"-18\" rx=\"42.79\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"1075.05\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\">Matter</text>\n</a>\n</g>\n</g>\n<!-- Matter&#45;&gt;Physicalistic -->\n<g id=\"edge11\" class=\"edge\">\n<title>Matter&#45;&gt;Physicalistic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M1048.33,-32.28C1020.28,-46.22 975.89,-68.29 943.75,-84.26\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"942.01,-81.22 934.62,-88.8 945.13,-87.49 942.01,-81.22\"/>\n<text text-anchor=\"middle\" x=\"1011.05\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n</g>\n</svg>\n",
+      "text/plain": [
+       "<graphviz.graphs.Digraph at 0x7fb304104a30>"
+      ]
+     },
+     "execution_count": 6,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "leafs = set()\n",
     "for s in onto.Perspective.subclasses():\n",
     "    leafs.update(s.subclasses())\n",
-    "graph = OntoGraph(onto, onto.Perspective, leafs=leafs, parents=1)\n",
+    "graph = OntoGraph(onto, onto.Perspective, leafs=leafs, parents=1, edgelabels=True)\n",
     "\n",
     "graph.dot\n",
     "#graph = OntoGraph(onto, onto.isA, leafs=('Physical',))\n",
     "#digraph = graph.dot\n",
     "#graph.get_edges()\n",
     "#[print(g) for g in G.nodes()]"
-   ],
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
+   "id": "02bbc250",
+   "metadata": {},
    "outputs": [
     {
-     "output_type": "execute_result",
      "data": {
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+      "application/vnd.jupyter.widget-view+json": {
+       "model_id": "d13ebc3304184eafa0583d926f64bd79",
+       "version_major": 2,
+       "version_minor": 0
+      },
       "text/plain": [
-       "<graphviz.dot.Digraph at 0x7f77f0bfee80>"
+       "GridspecLayout(children=(CytoscapeWidget(cytoscape_layout={'name': 'cola'}, cytoscape_style=[{'selector': 'nod…"
       ]
      },
      "metadata": {},
-     "execution_count": 3
+     "output_type": "display_data"
     }
    ],
-   "metadata": {}
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 4,
    "source": [
     "cytograph = cytoscapegraph(graph, onto=onto, infobox='right')\n",
     "display(cytograph)"
-   ],
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "id": "bd75e3c2",
+   "metadata": {},
    "outputs": [
     {
-     "output_type": "display_data",
      "data": {
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id=\"a_node9\"><a xlink:href=\"http://emmo.info/emmo/middle/holistic#EMMO_49804605_c0fe_4538_abda_f70ba1dc8a5d\" xlink:title=\"Participant\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"661.4\" cy=\"-279\" rx=\"61.99\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"661.4\" y=\"-275.3\" font-family=\"Times,serif\" font-size=\"14.00\">Participant</text>\n</a>\n</g>\n</g>\n<!-- Semiotic&#45;&gt;Participant -->\n<g id=\"edge10\" class=\"edge\">\n<title>Semiotic&#45;&gt;Participant</title>\n<path fill=\"none\" stroke=\"black\" d=\"M635.07,-210.2C639.64,-221.95 645.77,-237.76 650.98,-251.16\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"647.85,-252.77 654.73,-260.82 654.37,-250.24 647.85,-252.77\"/>\n<text text-anchor=\"middle\" x=\"657.4\" y=\"-231.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Interpreter -->\n<g id=\"node4\" class=\"node\">\n<title>Interpreter</title>\n<g id=\"a_node4\"><a xlink:href=\"http://emmo.info/emmo/middle/semiotics#EMMO_0527413c_b286_4e9c_b2d0_03fb2a038dee\" xlink:title=\"Interpreter\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"555.4\" cy=\"-105\" rx=\"63.09\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"555.4\" y=\"-101.3\" font-family=\"Times,serif\" font-size=\"14.00\">Interpreter</text>\n</a>\n</g>\n</g>\n<!-- Interpreter&#45;&gt;Semiotic -->\n<g id=\"edge3\" class=\"edge\">\n<title>Interpreter&#45;&gt;Semiotic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M551.53,-123.03C550.15,-133.35 550.22,-146.35 556.4,-156 561.9,-164.61 570.18,-171.15 579.19,-176.12\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"577.84,-179.35 588.36,-180.57 580.89,-173.06 577.84,-179.35\"/>\n<text text-anchor=\"middle\" x=\"567.4\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Interpretant -->\n<g id=\"node7\" class=\"node\">\n<title>Interpretant</title>\n<g id=\"a_node7\"><a xlink:href=\"http://emmo.info/emmo/middle/semiotics#EMMO_054af807_85cd_4a13_8eba_119dfdaaf38b\" xlink:title=\"Interpretant\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"159.4\" cy=\"-18\" rx=\"68.49\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"159.4\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\">Interpretant</text>\n</a>\n</g>\n</g>\n<!-- Interpreter&#45;&gt;Interpretant -->\n<g id=\"edge4\" class=\"edge\">\n<title>Interpreter&#45;&gt;Interpretant</title>\n<path fill=\"none\" stroke=\"darkgreen\" d=\"M495.1,-99.32C450.45,-95.87 388.13,-91.09 333.4,-87 305.96,-84.95 105.13,-89.15 86.4,-69 74.35,-56.04 87.91,-44.63 106.48,-35.99\"/>\n<polygon fill=\"darkgreen\" stroke=\"darkgreen\" points=\"108.08,-39.11 115.91,-31.97 105.34,-32.67 108.08,-39.11\"/>\n<text text-anchor=\"middle\" x=\"160.4\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">hasSpatialPart some</text>\n</g>\n<!-- Semiosis&#45;&gt;Sign -->\n<g id=\"edge9\" class=\"edge\">\n<title>Semiosis&#45;&gt;Sign</title>\n<path fill=\"none\" stroke=\"red\" stroke-dasharray=\"5,2\" d=\"M993.26,-188.52C833.82,-180.77 356.13,-157.46 352.4,-156 337.56,-150.2 323.7,-139.19 313.05,-128.98\"/>\n<polygon fill=\"red\" stroke=\"red\" points=\"315.43,-126.4 305.9,-121.77 310.46,-131.33 315.43,-126.4\"/>\n<text text-anchor=\"middle\" x=\"449.9\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">hasProperParticipant some</text>\n</g>\n<!-- Semiosis&#45;&gt;Interpreter -->\n<g id=\"edge7\" class=\"edge\">\n<title>Semiosis&#45;&gt;Interpreter</title>\n<path fill=\"none\" stroke=\"red\" stroke-dasharray=\"5,2\" d=\"M992.48,-190.84C893.04,-189.88 679.61,-184.45 612.4,-156 598.68,-150.19 585.95,-139.75 576.02,-129.91\"/>\n<polygon fill=\"red\" stroke=\"red\" points=\"578.45,-127.38 569,-122.58 573.39,-132.22 578.45,-127.38\"/>\n<text text-anchor=\"middle\" x=\"709.9\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">hasProperParticipant some</text>\n</g>\n<!-- Process -->\n<g id=\"node11\" class=\"node\">\n<title>Process</title>\n<g id=\"a_node11\"><a xlink:href=\"http://emmo.info/emmo/middle/holistic#EMMO_43e9a05d_98af_41b4_92f6_00f79a09bfce\" xlink:title=\"Process\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"1002.4\" cy=\"-279\" rx=\"46.59\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"1002.4\" y=\"-275.3\" font-family=\"Times,serif\" font-size=\"14.00\">Process</text>\n</a>\n</g>\n</g>\n<!-- Semiosis&#45;&gt;Process -->\n<g id=\"edge6\" class=\"edge\">\n<title>Semiosis&#45;&gt;Process</title>\n<path fill=\"none\" stroke=\"black\" d=\"M1036.1,-209.79C1030.12,-221.9 1021.93,-238.47 1015.12,-252.24\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"1011.97,-250.73 1010.68,-261.24 1018.25,-253.83 1011.97,-250.73\"/>\n<text text-anchor=\"middle\" x=\"1036.4\" y=\"-231.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Object -->\n<g id=\"node12\" class=\"node\">\n<title>Object</title>\n<g id=\"a_node12\"><a xlink:href=\"http://emmo.info/emmo/middle/semiotics#EMMO_6f5af708_f825_4feb_a0d1_a8d813d3022b\" xlink:title=\"Object\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"995.4\" cy=\"-105\" rx=\"40.89\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"995.4\" y=\"-101.3\" font-family=\"Times,serif\" font-size=\"14.00\">Object</text>\n</a>\n</g>\n</g>\n<!-- Semiosis&#45;&gt;Object -->\n<g id=\"edge8\" class=\"edge\">\n<title>Semiosis&#45;&gt;Object</title>\n<path fill=\"none\" stroke=\"red\" stroke-dasharray=\"5,2\" d=\"M992.42,-190.44C933.03,-188.56 841.22,-181.48 819.4,-156 783.04,-113.55 879.81,-105.83 943.87,-105.16\"/>\n<polygon fill=\"red\" stroke=\"red\" points=\"944.26,-108.66 954.24,-105.11 944.22,-101.66 944.26,-108.66\"/>\n<text text-anchor=\"middle\" x=\"916.9\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">hasProperParticipant some</text>\n</g>\n<!-- Observation -->\n<g id=\"node6\" class=\"node\">\n<title>Observation</title>\n<g id=\"a_node6\"><a xlink:href=\"http://emmo.info/emmo/middle/properties#EMMO_10a5fd39_06aa_4648_9e70_f962a9cb2069\" xlink:title=\"Observation\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"1122.4\" cy=\"-105\" rx=\"67.69\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"1122.4\" y=\"-101.3\" font-family=\"Times,serif\" font-size=\"14.00\">Observation</text>\n</a>\n</g>\n</g>\n<!-- Observation&#45;&gt;Semiosis -->\n<g id=\"edge19\" class=\"edge\">\n<title>Observation&#45;&gt;Semiosis</title>\n<path fill=\"none\" stroke=\"black\" d=\"M1106.99,-122.79C1095.37,-135.45 1079.29,-152.97 1066.34,-167.09\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"1063.69,-164.8 1059.51,-174.53 1068.85,-169.53 1063.69,-164.8\"/>\n<text text-anchor=\"middle\" x=\"1098.4\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Interpretant&#45;&gt;Sign -->\n<g id=\"edge12\" class=\"edge\">\n<title>Interpretant&#45;&gt;Sign</title>\n<path fill=\"none\" stroke=\"black\" d=\"M197.69,-32.96C211.07,-38.61 225.87,-45.75 238.4,-54 250.19,-61.76 261.86,-72.13 271.32,-81.42\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"268.86,-83.92 278.39,-88.56 273.84,-78.99 268.86,-83.92\"/>\n<text text-anchor=\"middle\" x=\"268.4\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Conventional -->\n<g id=\"node8\" class=\"node\">\n<title>Conventional</title>\n<g id=\"a_node8\"><a xlink:href=\"http://emmo.info/emmo/middle/semiotics#EMMO_35d2e130_6e01_41ed_94f7_00b333d46cf9\" xlink:title=\"Conventional\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"317.4\" cy=\"-18\" rx=\"71.49\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"317.4\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\">Conventional</text>\n</a>\n</g>\n</g>\n<!-- Conventional&#45;&gt;Sign -->\n<g id=\"edge14\" class=\"edge\">\n<title>Conventional&#45;&gt;Sign</title>\n<path fill=\"none\" stroke=\"black\" d=\"M312.34,-36.2C308.86,-48.03 304.17,-63.97 300.21,-77.42\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"296.83,-76.53 297.36,-87.11 303.54,-78.51 296.83,-76.53\"/>\n<text text-anchor=\"middle\" x=\"316.4\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Participant&#45;&gt;Process -->\n<g id=\"edge16\" class=\"edge\">\n<title>Participant&#45;&gt;Process</title>\n<path fill=\"none\" stroke=\"red\" d=\"M723.15,-279C786.29,-279 883.57,-279 945.06,-279\"/>\n<polygon fill=\"red\" stroke=\"red\" points=\"955.36,-282.5 945.36,-279 955.36,-275.5 955.36,-282.5\"/>\n<text text-anchor=\"middle\" x=\"839.37\" y=\"-264.8\" font-family=\"Times,serif\" font-size=\"14.00\">Inverse(hasParticipant) some</text>\n</g>\n<!-- Holistic -->\n<g id=\"node13\" class=\"node\">\n<title>Holistic</title>\n<g id=\"a_node13\"><a xlink:href=\"http://emmo.info/emmo/middle/holistic#EMMO_0277f24a_ea7f_4917_81b7_fb0406c8fc62\" xlink:title=\"Holistic\">\n<ellipse fill=\"#ffc880\" stroke=\"black\" cx=\"828.4\" cy=\"-366\" rx=\"46.29\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"828.4\" y=\"-362.3\" font-family=\"Times,serif\" font-size=\"14.00\">Holistic</text>\n</a>\n</g>\n</g>\n<!-- Participant&#45;&gt;Holistic -->\n<g id=\"edge15\" class=\"edge\">\n<title>Participant&#45;&gt;Holistic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M690.87,-295C719.21,-309.43 762.11,-331.26 792.45,-346.7\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"790.93,-349.86 801.43,-351.27 794.1,-343.62 790.93,-349.86\"/>\n<text text-anchor=\"middle\" x=\"765.4\" y=\"-318.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Icon -->\n<g id=\"node10\" class=\"node\">\n<title>Icon</title>\n<g id=\"a_node10\"><a xlink:href=\"http://emmo.info/emmo/middle/semiotics#EMMO_d7788d1a_020d_4c78_85a1_13563fcec168\" xlink:title=\"Icon\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"437.4\" cy=\"-18\" rx=\"30.59\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"437.4\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\">Icon</text>\n</a>\n</g>\n</g>\n<!-- Icon&#45;&gt;Sign -->\n<g id=\"edge18\" class=\"edge\">\n<title>Icon&#45;&gt;Sign</title>\n<path fill=\"none\" stroke=\"black\" d=\"M416.31,-31.36C391.75,-45.76 350.98,-69.66 322.95,-86.09\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"320.84,-83.27 313.98,-91.35 324.38,-89.31 320.84,-83.27\"/>\n<text text-anchor=\"middle\" x=\"384.4\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Process&#45;&gt;Participant -->\n<g id=\"edge2\" class=\"edge\">\n<title>Process&#45;&gt;Participant</title>\n<path fill=\"none\" stroke=\"red\" d=\"M962.77,-288.68C947.16,-292.03 929.03,-295.35 912.37,-297 847.8,-303.39 831.03,-302.5 766.37,-297 751.85,-295.76 736.32,-293.58 721.78,-291.16\"/>\n<polygon fill=\"red\" stroke=\"red\" points=\"722.35,-287.7 711.9,-289.45 721.15,-294.6 722.35,-287.7\"/>\n<text text-anchor=\"middle\" x=\"839.37\" y=\"-285.8\" font-family=\"Times,serif\" font-size=\"14.00\">hasParticipant some</text>\n</g>\n<!-- Process&#45;&gt;Holistic -->\n<g id=\"edge1\" class=\"edge\">\n<title>Process&#45;&gt;Holistic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M974.44,-293.66C944.8,-308.14 897.85,-331.07 865.21,-347.02\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"863.45,-343.98 856,-351.52 866.52,-350.27 863.45,-343.98\"/>\n<text text-anchor=\"middle\" x=\"936.4\" y=\"-318.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Object&#45;&gt;Semiotic -->\n<g id=\"edge5\" class=\"edge\">\n<title>Object&#45;&gt;Semiotic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M1009.29,-122.05C1016.84,-132.75 1023.04,-146.54 1014.4,-156 992.98,-179.45 793.27,-187.35 689.85,-189.88\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"689.46,-186.39 679.55,-190.12 689.63,-193.38 689.46,-186.39\"/>\n<text text-anchor=\"middle\" x=\"1029.4\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n</g>\n</svg>\n",
       "text/plain": [
-       "GridspecLayout(children=(CytoscapeWidget(cytoscape_layout={'name': 'cola'}, cytoscape_style=[{'selector': 'nod…"
+       "<graphviz.graphs.Digraph at 0x7fb2da422a10>"
       ]
      },
-     "metadata": {}
+     "execution_count": 8,
+     "metadata": {},
+     "output_type": "execute_result"
     }
    ],
-   "metadata": {}
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "source": [],
-   "outputs": [],
-   "metadata": {}
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "source": [],
-   "outputs": [],
-   "metadata": {}
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "source": [],
-   "outputs": [],
-   "metadata": {
-    "scrolled": true,
-    "tags": []
-   }
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "source": [],
-   "outputs": [],
-   "metadata": {}
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 5,
    "source": [
     "leafs = {onto.Interpreter, onto.Conventional, onto.Icon, onto.Observation,\n",
     "         onto.Object}\n",
@@ -123,35 +111,18 @@
     "g = OntoGraph(onto)\n",
     "g.add_entities(semiotic, relations='all', edgelabels=True)\n",
     "g.dot"
-   ],
-   "outputs": [
-    {
-     "output_type": "execute_result",
-     "data": {
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font-size=\"14.00\">isA</text>\n</g>\n<!-- Semiosis -->\n<g id=\"node7\" class=\"node\">\n<title>Semiosis</title>\n<g id=\"a_node7\"><a xlink:href=\"http://emmo.info/emmo/middle/semiotics#EMMO_008fd3b2_4013_451f_8827_52bceab11841\" xlink:title=\"Semiosis\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"1090.4\" cy=\"-192\" rx=\"51.99\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"1090.4\" y=\"-188.3\" font-family=\"Times,serif\" font-size=\"14.00\">Semiosis</text>\n</a>\n</g>\n</g>\n<!-- Semiotic&#45;&gt;Semiosis -->\n<g id=\"edge13\" class=\"edge\">\n<title>Semiotic&#45;&gt;Semiosis</title>\n<path fill=\"none\" stroke=\"red\" stroke-dasharray=\"5,2\" d=\"M759.91,-192C829.45,-192 953.22,-192 1027.96,-192\"/>\n<polygon fill=\"red\" stroke=\"red\" points=\"1038.17,-195.5 1028.17,-192 1038.17,-188.5 1038.17,-195.5\"/>\n<text text-anchor=\"middle\" x=\"899.07\" y=\"-177.8\" font-family=\"Times,serif\" font-size=\"14.00\">Inverse(hasProperParticipant) some</text>\n</g>\n<!-- Sign -->\n<g id=\"node2\" class=\"node\">\n<title>Sign</title>\n<g id=\"a_node2\"><a xlink:href=\"http://emmo.info/emmo/middle/semiotics#EMMO_b21a56ed_f969_4612_a6ec_cb7766f7f31d\" xlink:title=\"Sign\">\n<ellipse fill=\"#ffc880\" stroke=\"black\" cx=\"222.4\" cy=\"-105\" rx=\"31.7\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"222.4\" y=\"-101.3\" font-family=\"Times,serif\" font-size=\"14.00\">Sign</text>\n</a>\n</g>\n</g>\n<!-- Sign&#45;&gt;Semiotic -->\n<g id=\"edge1\" class=\"edge\">\n<title>Sign&#45;&gt;Semiotic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M217.49,-123.01C215.49,-133.86 215.27,-147.44 223.4,-156 251.95,-186.07 522.35,-190.6 646.56,-191.08\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"646.67,-194.58 656.68,-191.11 646.69,-187.58 646.67,-194.58\"/>\n<text text-anchor=\"middle\" x=\"234.4\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Process -->\n<g id=\"node4\" class=\"node\">\n<title>Process</title>\n<g id=\"a_node4\"><a xlink:href=\"http://emmo.info/emmo/middle/holistic#EMMO_43e9a05d_98af_41b4_92f6_00f79a09bfce\" xlink:title=\"Process\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"1082.4\" cy=\"-279\" rx=\"46.59\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"1082.4\" y=\"-275.3\" font-family=\"Times,serif\" font-size=\"14.00\">Process</text>\n</a>\n</g>\n</g>\n<!-- Participant&#45;&gt;Process -->\n<g id=\"edge10\" class=\"edge\">\n<title>Participant&#45;&gt;Process</title>\n<path fill=\"none\" stroke=\"red\" d=\"M803.15,-279C866.29,-279 963.57,-279 1025.06,-279\"/>\n<polygon fill=\"red\" stroke=\"red\" points=\"1035.36,-282.5 1025.36,-279 1035.36,-275.5 1035.36,-282.5\"/>\n<text text-anchor=\"middle\" x=\"919.37\" y=\"-264.8\" font-family=\"Times,serif\" font-size=\"14.00\">Inverse(hasParticipant) some</text>\n</g>\n<!-- Holistic -->\n<g id=\"node6\" class=\"node\">\n<title>Holistic</title>\n<g id=\"a_node6\"><a xlink:href=\"http://emmo.info/emmo/middle/holistic#EMMO_0277f24a_ea7f_4917_81b7_fb0406c8fc62\" xlink:title=\"Holistic\">\n<ellipse fill=\"#ffc880\" stroke=\"black\" cx=\"908.4\" cy=\"-366\" rx=\"46.29\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"908.4\" y=\"-362.3\" font-family=\"Times,serif\" font-size=\"14.00\">Holistic</text>\n</a>\n</g>\n</g>\n<!-- Participant&#45;&gt;Holistic -->\n<g id=\"edge9\" class=\"edge\">\n<title>Participant&#45;&gt;Holistic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M770.87,-295C799.21,-309.43 842.11,-331.26 872.45,-346.7\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"870.93,-349.86 881.43,-351.27 874.1,-343.62 870.93,-349.86\"/>\n<text text-anchor=\"middle\" x=\"846.4\" y=\"-318.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Process&#45;&gt;Participant -->\n<g id=\"edge16\" class=\"edge\">\n<title>Process&#45;&gt;Participant</title>\n<path fill=\"none\" stroke=\"red\" d=\"M1042.77,-288.68C1027.16,-292.03 1009.03,-295.35 992.37,-297 927.8,-303.39 911.03,-302.5 846.37,-297 831.85,-295.76 816.32,-293.58 801.78,-291.16\"/>\n<polygon fill=\"red\" stroke=\"red\" points=\"802.35,-287.7 791.9,-289.45 801.15,-294.6 802.35,-287.7\"/>\n<text text-anchor=\"middle\" x=\"919.37\" y=\"-285.8\" font-family=\"Times,serif\" font-size=\"14.00\">hasParticipant some</text>\n</g>\n<!-- Process&#45;&gt;Holistic -->\n<g id=\"edge15\" class=\"edge\">\n<title>Process&#45;&gt;Holistic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M1054.44,-293.66C1024.8,-308.14 977.85,-331.07 945.21,-347.02\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"943.45,-343.98 936,-351.52 946.52,-350.27 943.45,-343.98\"/>\n<text text-anchor=\"middle\" x=\"1017.4\" y=\"-318.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Index -->\n<g id=\"node5\" class=\"node\">\n<title>Index</title>\n<g id=\"a_node5\"><a xlink:href=\"http://emmo.info/emmo/middle/semiotics#EMMO_0cd58641_824c_4851_907f_f4c3be76630c\" xlink:title=\"Index\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"36.4\" cy=\"-18\" rx=\"36.29\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"36.4\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\">Index</text>\n</a>\n</g>\n</g>\n<!-- Index&#45;&gt;Sign -->\n<g id=\"edge14\" class=\"edge\">\n<title>Index&#45;&gt;Sign</title>\n<path fill=\"none\" stroke=\"black\" d=\"M62.26,-30.82C95.34,-45.94 152.68,-72.14 189.02,-88.75\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"187.68,-91.98 198.23,-92.96 190.59,-85.62 187.68,-91.98\"/>\n<text text-anchor=\"middle\" x=\"152.4\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Semiosis&#45;&gt;Sign -->\n<g id=\"edge5\" class=\"edge\">\n<title>Semiosis&#45;&gt;Sign</title>\n<path fill=\"none\" stroke=\"red\" stroke-dasharray=\"5,2\" d=\"M1039.38,-188.08C975.9,-184.51 864.16,-178.38 768.4,-174 716.75,-171.64 352.86,-171.08 303.4,-156 283.31,-149.88 263.21,-137.52 248.06,-126.62\"/>\n<polygon fill=\"red\" stroke=\"red\" points=\"249.85,-123.59 239.74,-120.42 245.67,-129.2 249.85,-123.59\"/>\n<text text-anchor=\"middle\" x=\"400.9\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">hasProperParticipant some</text>\n</g>\n<!-- Semiosis&#45;&gt;Process -->\n<g id=\"edge3\" class=\"edge\">\n<title>Semiosis&#45;&gt;Process</title>\n<path fill=\"none\" stroke=\"black\" d=\"M1088.78,-210.2C1087.68,-221.84 1086.21,-237.45 1084.96,-250.76\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"1081.47,-250.54 1084.01,-260.82 1088.44,-251.2 1081.47,-250.54\"/>\n<text text-anchor=\"middle\" x=\"1098.4\" y=\"-231.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Interpreter -->\n<g id=\"node8\" class=\"node\">\n<title>Interpreter</title>\n<g id=\"a_node8\"><a xlink:href=\"http://emmo.info/emmo/middle/semiotics#EMMO_0527413c_b286_4e9c_b2d0_03fb2a038dee\" xlink:title=\"Interpreter\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"703.4\" cy=\"-105\" rx=\"63.09\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"703.4\" y=\"-101.3\" font-family=\"Times,serif\" font-size=\"14.00\">Interpreter</text>\n</a>\n</g>\n</g>\n<!-- Semiosis&#45;&gt;Interpreter -->\n<g id=\"edge6\" class=\"edge\">\n<title>Semiosis&#45;&gt;Interpreter</title>\n<path fill=\"none\" stroke=\"red\" stroke-dasharray=\"5,2\" d=\"M1039.2,-188.4C897.45,-181.13 509.96,-160.84 505.4,-156 500.83,-151.15 501.11,-146.11 505.4,-141 521.45,-121.86 581.45,-113.18 631.24,-109.25\"/>\n<polygon fill=\"red\" stroke=\"red\" points=\"631.65,-112.73 641.37,-108.5 631.14,-105.75 631.65,-112.73\"/>\n<text text-anchor=\"middle\" x=\"602.9\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">hasProperParticipant some</text>\n</g>\n<!-- Object -->\n<g id=\"node11\" class=\"node\">\n<title>Object</title>\n<g id=\"a_node11\"><a xlink:href=\"http://emmo.info/emmo/middle/semiotics#EMMO_6f5af708_f825_4feb_a0d1_a8d813d3022b\" xlink:title=\"Object\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"964.4\" cy=\"-105\" rx=\"40.89\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"964.4\" y=\"-101.3\" font-family=\"Times,serif\" font-size=\"14.00\">Object</text>\n</a>\n</g>\n</g>\n<!-- Semiosis&#45;&gt;Object -->\n<g id=\"edge4\" class=\"edge\">\n<title>Semiosis&#45;&gt;Object</title>\n<path fill=\"none\" stroke=\"red\" stroke-dasharray=\"5,2\" d=\"M1038.58,-189.43C947.94,-186.15 768.39,-177.04 749.4,-156 744.93,-151.05 745.08,-146.08 749.4,-141 769.98,-116.79 856.18,-109.29 912.98,-106.98\"/>\n<polygon fill=\"red\" stroke=\"red\" points=\"913.36,-110.47 923.23,-106.61 913.11,-103.48 913.36,-110.47\"/>\n<text text-anchor=\"middle\" x=\"846.9\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">hasProperParticipant some</text>\n</g>\n<!-- Interpreter&#45;&gt;Semiotic -->\n<g id=\"edge7\" class=\"edge\">\n<title>Interpreter&#45;&gt;Semiotic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M703.34,-123.14C703.41,-132.8 703.67,-145.08 704.4,-156 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205.34,-79.84\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"202.55,-81.95 211.18,-88.1 208.27,-77.92 202.55,-81.95\"/>\n<text text-anchor=\"middle\" x=\"207.4\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Icon -->\n<g id=\"node10\" class=\"node\">\n<title>Icon</title>\n<g id=\"a_node10\"><a xlink:href=\"http://emmo.info/emmo/middle/semiotics#EMMO_d7788d1a_020d_4c78_85a1_13563fcec168\" xlink:title=\"Icon\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"282.4\" cy=\"-18\" rx=\"30.59\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"282.4\" y=\"-14.3\" font-family=\"Times,serif\" font-size=\"14.00\">Icon</text>\n</a>\n</g>\n</g>\n<!-- Icon&#45;&gt;Sign -->\n<g id=\"edge18\" class=\"edge\">\n<title>Icon&#45;&gt;Sign</title>\n<path fill=\"none\" stroke=\"black\" d=\"M268.93,-34.32C263.87,-40.31 258.19,-47.34 253.4,-54 247.76,-61.83 242.07,-70.69 237.12,-78.75\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"234.06,-77.05 231.9,-87.42 240.06,-80.66 234.06,-77.05\"/>\n<text text-anchor=\"middle\" x=\"264.4\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Object&#45;&gt;Semiotic -->\n<g id=\"edge2\" class=\"edge\">\n<title>Object&#45;&gt;Semiotic</title>\n<path fill=\"none\" stroke=\"black\" d=\"M962.02,-122.98C959.54,-134.1 954.52,-148 944.4,-156 918.02,-176.85 830.17,-185.33 769.44,-188.75\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"768.99,-185.26 759.19,-189.29 769.36,-192.25 768.99,-185.26\"/>\n<text text-anchor=\"middle\" x=\"967.4\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Interpretant&#45;&gt;Sign -->\n<g id=\"edge11\" class=\"edge\">\n<title>Interpretant&#45;&gt;Sign</title>\n<path fill=\"none\" stroke=\"black\" d=\"M465.3,-35.99C462.35,-47.11 456.77,-61.02 446.4,-69 418.64,-90.35 321.26,-98.93 264.45,-102.18\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"264.13,-98.69 254.34,-102.72 264.51,-105.68 264.13,-98.69\"/>\n<text text-anchor=\"middle\" x=\"469.4\" y=\"-57.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n<!-- Observation -->\n<g id=\"node13\" class=\"node\">\n<title>Observation</title>\n<g id=\"a_node13\"><a xlink:href=\"http://emmo.info/emmo/middle/properties#EMMO_10a5fd39_06aa_4648_9e70_f962a9cb2069\" xlink:title=\"Observation\">\n<ellipse fill=\"#ffffcc\" stroke=\"black\" cx=\"1091.4\" cy=\"-105\" rx=\"67.69\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"1091.4\" y=\"-101.3\" font-family=\"Times,serif\" font-size=\"14.00\">Observation</text>\n</a>\n</g>\n</g>\n<!-- Observation&#45;&gt;Semiosis -->\n<g id=\"edge17\" class=\"edge\">\n<title>Observation&#45;&gt;Semiosis</title>\n<path fill=\"none\" stroke=\"black\" d=\"M1091.19,-123.2C1091.06,-134.84 1090.87,-150.45 1090.72,-163.76\"/>\n<polygon fill=\"none\" stroke=\"black\" points=\"1087.22,-163.78 1090.6,-173.82 1094.22,-163.87 1087.22,-163.78\"/>\n<text text-anchor=\"middle\" x=\"1102.4\" y=\"-144.8\" font-family=\"Times,serif\" font-size=\"14.00\">isA</text>\n</g>\n</g>\n</svg>\n",
-      "text/plain": [
-       "<graphviz.dot.Digraph at 0x7f77c1022370>"
-      ]
-     },
-     "metadata": {},
-     "execution_count": 5
-    }
-   ],
-   "metadata": {}
+   ]
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
-   "source": [
-    "cytograph2 = cytoscapegraph(g, onto=onto, infobox='right')\n",
-    "display(cytograph2)"
-   ],
+   "execution_count": 9,
+   "id": "c20bc4fb",
+   "metadata": {},
    "outputs": [
     {
-     "output_type": "display_data",
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "11003b8f7503456cbcc2c8147915b886",
+       "model_id": "55e3c07a21b746b6988b5cd99328a69e",
        "version_major": 2,
        "version_minor": 0
       },
@@ -159,183 +130,182 @@
        "GridspecLayout(children=(CytoscapeWidget(cytoscape_layout={'name': 'cola'}, cytoscape_style=[{'selector': 'nod…"
       ]
      },
-     "metadata": {}
+     "metadata": {},
+     "output_type": "display_data"
     }
    ],
-   "metadata": {}
+   "source": [
+    "cytograph2 = cytoscapegraph(g, onto=onto, infobox='right')\n",
+    "display(cytograph2)"
+   ]
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
-   "source": [
-    "g.dot.source"
-   ],
-   "outputs": [
-    {
-     "output_type": "execute_result",
-     "data": {
-      "text/plain": [
-       "'digraph {\\n\\tgraph [fontsize=8 rankdir=BT]\\n\\tSemiotic [label=Semiotic URL=\"http://emmo.info/emmo/middle/semiotics#EMMO_b803f122_4acb_4064_9d71_c1e5fd091fc9\" fillcolor=\"#ffc880\" style=filled]\\n\\tSign [label=Sign URL=\"http://emmo.info/emmo/middle/semiotics#EMMO_b21a56ed_f969_4612_a6ec_cb7766f7f31d\" fillcolor=\"#ffc880\" style=filled]\\n\\tParticipant [label=Participant URL=\"http://emmo.info/emmo/middle/holistic#EMMO_49804605_c0fe_4538_abda_f70ba1dc8a5d\" fillcolor=\"#ffffcc\" style=filled]\\n\\tProcess [label=Process URL=\"http://emmo.info/emmo/middle/holistic#EMMO_43e9a05d_98af_41b4_92f6_00f79a09bfce\" fillcolor=\"#ffffcc\" style=filled]\\n\\tIndex [label=Index URL=\"http://emmo.info/emmo/middle/semiotics#EMMO_0cd58641_824c_4851_907f_f4c3be76630c\" fillcolor=\"#ffffcc\" style=filled]\\n\\tHolistic [label=Holistic URL=\"http://emmo.info/emmo/middle/holistic#EMMO_0277f24a_ea7f_4917_81b7_fb0406c8fc62\" fillcolor=\"#ffc880\" style=filled]\\n\\tSemiosis [label=Semiosis URL=\"http://emmo.info/emmo/middle/semiotics#EMMO_008fd3b2_4013_451f_8827_52bceab11841\" fillcolor=\"#ffffcc\" style=filled]\\n\\tInterpreter [label=Interpreter URL=\"http://emmo.info/emmo/middle/semiotics#EMMO_0527413c_b286_4e9c_b2d0_03fb2a038dee\" fillcolor=\"#ffffcc\" style=filled]\\n\\tConventional [label=Conventional URL=\"http://emmo.info/emmo/middle/semiotics#EMMO_35d2e130_6e01_41ed_94f7_00b333d46cf9\" fillcolor=\"#ffffcc\" style=filled]\\n\\tIcon [label=Icon URL=\"http://emmo.info/emmo/middle/semiotics#EMMO_d7788d1a_020d_4c78_85a1_13563fcec168\" fillcolor=\"#ffffcc\" style=filled]\\n\\tObject [label=Object URL=\"http://emmo.info/emmo/middle/semiotics#EMMO_6f5af708_f825_4feb_a0d1_a8d813d3022b\" fillcolor=\"#ffffcc\" style=filled]\\n\\tInterpretant [label=Interpretant URL=\"http://emmo.info/emmo/middle/semiotics#EMMO_054af807_85cd_4a13_8eba_119dfdaaf38b\" fillcolor=\"#ffffcc\" style=filled]\\n\\tObservation [label=Observation URL=\"http://emmo.info/emmo/middle/properties#EMMO_10a5fd39_06aa_4648_9e70_f962a9cb2069\" fillcolor=\"#ffffcc\" style=filled]\\n\\tSign -> Semiotic [label=isA arrowhead=empty]\\n\\tObject -> Semiotic [label=isA arrowhead=empty]\\n\\tSemiosis -> Process [label=isA arrowhead=empty]\\n\\tSemiosis -> Object [label=\"hasProperParticipant some\" color=red constraint=false style=dashed]\\n\\tSemiosis -> Sign [label=\"hasProperParticipant some\" color=red constraint=false style=dashed]\\n\\tSemiosis -> Interpreter [label=\"hasProperParticipant some\" color=red constraint=false style=dashed]\\n\\tInterpreter -> Semiotic [label=isA arrowhead=empty]\\n\\tInterpreter -> Interpretant [label=\"hasSpatialPart some\" color=darkgreen constraint=false]\\n\\tParticipant -> Holistic [label=isA arrowhead=empty]\\n\\tParticipant -> Process [label=\"Inverse(hasParticipant) some\" arrowhead=inv color=red constraint=false]\\n\\tInterpretant -> Sign [label=isA arrowhead=empty]\\n\\tSemiotic -> Participant [label=isA arrowhead=empty]\\n\\tSemiotic -> Semiosis [label=\"Inverse(hasProperParticipant) some\" arrowhead=inv color=red constraint=false style=dashed]\\n\\tIndex -> Sign [label=isA arrowhead=empty]\\n\\tProcess -> Holistic [label=isA arrowhead=empty]\\n\\tProcess -> Participant [label=\"hasParticipant some\" color=red constraint=false]\\n\\tObservation -> Semiosis [label=isA arrowhead=empty]\\n\\tIcon -> Sign [label=isA arrowhead=empty]\\n\\tConventional -> Sign [label=isA arrowhead=empty]\\n}'"
-      ]
-     },
-     "metadata": {},
-     "execution_count": 7
-    }
-   ],
-   "metadata": {}
+   "execution_count": null,
+   "id": "ccd9c9a2",
+   "metadata": {},
+   "outputs": [],
+   "source": []
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
-   "source": [
-    "onto.Atom.iri"
-   ],
-   "outputs": [
-    {
-     "output_type": "execute_result",
-     "data": {
-      "text/plain": [
-       "'http://emmo.info/emmo/middle/materials#EMMO_eb77076b_a104_42ac_a065_798b2d2809ad'"
-      ]
-     },
-     "metadata": {},
-     "execution_count": 8
-    }
-   ],
-   "metadata": {}
+   "execution_count": null,
+   "id": "91a47699",
+   "metadata": {},
+   "outputs": [],
+   "source": []
   },
   {
    "cell_type": "code",
    "execution_count": null,
-   "source": [],
+   "id": "0134c7bc",
+   "metadata": {},
    "outputs": [],
-   "metadata": {}
+   "source": []
   },
   {
    "cell_type": "code",
    "execution_count": null,
-   "source": [],
+   "id": "99bf716e",
+   "metadata": {},
    "outputs": [],
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+   "source": []
   },
   {
    "cell_type": "code",
    "execution_count": null,
-   "source": [],
+   "id": "c5f3c683",
+   "metadata": {},
    "outputs": [],
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+   "source": []
   },
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    "cell_type": "raw",
-   "source": [],
-   "metadata": {}
+   "id": "40ebb5bc",
+   "metadata": {},
+   "source": []
   },
   {
    "cell_type": "code",
    "execution_count": null,
-   "source": [],
+   "id": "2e398e4a",
+   "metadata": {},
    "outputs": [],
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+   "source": []
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   {
    "cell_type": "code",
    "execution_count": null,
-   "source": [],
+   "id": "5f6f7caf",
+   "metadata": {},
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+   "source": []
   },
   {
    "cell_type": "code",
    "execution_count": null,
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+   "id": "a3352c37",
+   "metadata": {},
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+   "source": []
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   {
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    "execution_count": null,
-   "source": [],
+   "id": "c536b411",
+   "metadata": {},
    "outputs": [],
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+   "source": []
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    "execution_count": null,
-   "source": [],
+   "id": "3253b09c",
+   "metadata": {},
    "outputs": [],
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+   "source": []
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    "execution_count": null,
-   "source": [],
+   "id": "7c170bef",
+   "metadata": {},
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+   "source": []
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    "cell_type": "code",
    "execution_count": null,
-   "source": [],
+   "id": "c463b3ba",
+   "metadata": {},
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+   "source": []
   },
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    "execution_count": null,
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+   "id": "b5834885",
+   "metadata": {},
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+   "source": []
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+   "id": "74d14d13",
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+   "source": []
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    "execution_count": null,
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+   "id": "bb7bbb02",
+   "metadata": {},
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+   "source": []
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    "cell_type": "code",
    "execution_count": null,
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+   "id": "b067143a",
+   "metadata": {},
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+   "source": []
   },
   {
    "cell_type": "code",
    "execution_count": null,
+   "id": "16ee6113",
+   "metadata": {},
+   "outputs": [],
    "source": [
     "\n"
-   ],
-   "outputs": [],
-   "metadata": {}
+   ]
   },
   {
    "cell_type": "code",
    "execution_count": null,
-   "source": [],
+   "id": "01873024",
+   "metadata": {},
    "outputs": [],
-   "metadata": {}
+   "source": []
   },
   {
    "cell_type": "code",
    "execution_count": null,
-   "source": [],
+   "id": "9bd1dd33",
+   "metadata": {},
    "outputs": [],
-   "metadata": {}
+   "source": []
   },
   {
    "cell_type": "code",
    "execution_count": null,
-   "source": [],
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diff --git a/ontopy/graph.py b/ontopy/graph.py
index 81ca9ac60..30dc14219 100644
--- a/ontopy/graph.py
+++ b/ontopy/graph.py
@@ -7,7 +7,7 @@
 import re
 import tempfile
 import warnings
-from typing import Optional
+from typing import Optional, TYPE_CHECKING
 import defusedxml.ElementTree as ET
 import owlready2
 import graphviz
@@ -16,6 +16,10 @@
 from ontopy.ontology import Ontology
 from ontopy.utils import EMMOntoPyException
 
+if TYPE_CHECKING:
+    from ipywidgets.widgets.widget_templates import GridspecLayout
+
+
 typenames = (
     owlready2.class_construct._restriction_type_2_label  # pylint: disable=protected-access
 )
@@ -1053,7 +1057,8 @@ def cytoscapegraph(
     onto: Optional[Ontology] = None,
     infobox: str = None,
     force: bool = False,
-):  # pylint: disable=too-many-locals,too-many-statements
+) -> "GridspecLayout":
+    # pylint: disable=too-many-locals,too-many-statements
     """Returns and instance of icytoscape-figure for an
     instance Graph of OntoGraph, the accompanying ontology
     is required for mouse actions.