diff --git a/tests/examples/Makefile b/tests/examples/Makefile
index 8db1bb8f..afcb8a3a 100644
--- a/tests/examples/Makefile
+++ b/tests/examples/Makefile
@@ -28,6 +28,7 @@ all: \
   location_PASS_validation.ttl \
   location_XFAIL_validation.ttl \
   message_thread_PASS_validation.ttl \
+  message_thread_XFAIL_validation.ttl \
   relationship_PASS_validation.ttl \
   relationship_XFAIL_validation.ttl \
   thread_PASS_validation.ttl \
@@ -82,6 +83,7 @@ check: \
   location_PASS_validation.ttl \
   location_XFAIL_validation.ttl \
   message_thread_PASS_validation.ttl \
+  message_thread_XFAIL_validation.ttl \
   relationship_PASS_validation.ttl \
   relationship_XFAIL_validation.ttl \
   thread_PASS_validation.ttl \
diff --git a/tests/examples/message_thread_XFAIL.json b/tests/examples/message_thread_XFAIL.json
new file mode 100644
index 00000000..beb440a3
--- /dev/null
+++ b/tests/examples/message_thread_XFAIL.json
@@ -0,0 +1,219 @@
+{
+    "@context": {
+        "co": "http://purl.org/co/",
+        "kb": "http://example.org/kb/",
+        "rdfs": "http://www.w3.org/2000/01/rdf-schema#",
+        "observable": "https://ontology.unifiedcyberontology.org/uco/observable/",
+        "types": "https://ontology.unifiedcyberontology.org/uco/types/",
+        "xsd": "http://www.w3.org/2001/XMLSchema#"
+    },
+    "@graph": [
+        {
+            "@id": "kb:message-1",
+            "@type": "observable:ObservableObject",
+            "rdfs:comment": "The non-Message class will trigger errors pertaining to co:element, co:itemContent and types:threadOriginItem."
+        },
+        {
+            "@id": "kb:message-2",
+            "@type": "observable:Message"
+        },
+        {
+            "@id": "kb:message-3",
+            "@type": "observable:Message"
+        },
+        {
+            "@id": "kb:message-4",
+            "@type": "observable:Message"
+        },
+        {
+            "@id": "kb:message-5",
+            "@type": "observable:Message"
+        },
+        {
+            "@id": "kb:message-6",
+            "@type": "observable:ObservableObject",
+            "rdfs:comment": "The non-Message class will trigger errors pertaining to co:element, co:itemContent and types:threadTerminalItem."
+        },
+        {
+            "@id": "kb:message-7",
+            "@type": "observable:Message"
+        },
+        {
+            "@id": "kb:message-thread-2",
+            "@type": "observable:MessageThread",
+            "core:hasFacet": {
+                "@type": "observable:MessageThreadFacet",
+                "observable:message": [
+                    {
+                        "@id": "kb:message-1"
+                    },
+                    {
+                        "@id": "kb:message-2"
+                    },
+                    {
+                        "@id": "kb:message-3"
+                    },
+                    {
+                        "@id": "kb:message-4"
+                    },
+                    {
+                        "@id": "kb:message-5"
+                    },
+                    {
+                        "@id": "kb:message-6"
+                    }
+                ],
+                "observable:messageThread": {
+                    "@id": "kb:thread-2"
+                }
+            }
+        },
+        {
+            "@id": "kb:thread-2",
+            "@type": "types:Thread",
+            "co:size": {
+                "@type": "xsd:nonNegativeInteger",
+                "@value": "6"
+            },
+            "co:element": [
+                {
+                    "@id": "kb:message-1"
+                },
+                {
+                    "@id": "kb:message-2"
+                },
+                {
+                    "@id": "kb:message-3"
+                },
+                {
+                    "@id": "kb:message-4"
+                },
+                {
+                    "@id": "kb:message-5"
+                },
+                {
+                    "@id": "kb:message-6"
+                }
+            ],
+            "co:item": [
+
+                {
+                    "@id": "kb:message-thread-2-item-1"
+                },
+                {
+                    "@id": "kb:message-thread-2-item-2"
+                },
+                {
+                    "@id": "kb:message-thread-2-item-3"
+                },
+                {
+                    "@id": "kb:message-thread-2-item-4"
+                },
+                {
+                    "@id": "kb:message-thread-2-item-5"
+                },
+                {
+                    "@id": "kb:message-thread-2-item-6"
+                }
+
+            ],
+            "types:threadOriginItem": [
+                {
+                    "@id": "kb:message-thread-2-item-1"
+                },
+                {
+                    "@id": "kb:message-thread-2-item-5"
+                }
+            ],
+            "types:threadTerminalItem": [
+                {
+                    "@id": "kb:message-thread-2-item-3"
+                },
+                {
+                    "@id": "kb:message-thread-2-item-4"
+                },
+                {
+                    "@id": "kb:message-thread-2-item-6"
+                }
+            ]
+        },
+        {
+            "@id": "kb:message-thread-2-item-1",
+            "@type": "types:ThreadItem",
+            "co:itemContent": {
+                "@id": "kb:message-1"
+            },
+            "types:threadNextItem": [
+                {
+                    "@id": "kb:message-thread-2-item-2"
+                },
+                {
+                    "@id": "kb:message-thread-2-item-6"
+                }
+            ]
+        },
+        {
+            "@id": "kb:message-thread-2-item-2",
+            "@type": "types:ThreadItem",
+            "co:itemContent": {
+                "@id": "kb:message-2"
+            },
+            "types:threadNextItem": [
+                {
+                    "@id": "kb:message-thread-2-item-3"
+                },
+                {
+                    "@id": "kb:message-thread-2-item-4"
+                }
+            ],
+            "types:threadPreviousItem": {
+                "@id": "kb:message-thread-2-item-1"
+            }
+        },
+        {
+            "@id": "kb:message-thread-2-item-3",
+            "@type": "types:ThreadItem",
+            "co:itemContent": {
+                "@id": "kb:message-3"
+            },
+            "types:threadPreviousItem": {
+                "@id": "kb:message-thread-2-item-2"
+            }
+        },
+        {
+            "@id": "kb:message-thread-2-item-4",
+            "@type": "types:ThreadItem",
+            "co:itemContent": {
+                "@id": "kb:message-4"
+            },
+            "types:threadPreviousItem": {
+                "@id": "kb:message-thread-2-item-2"
+            }
+        },
+        {
+            "@id": "kb:message-thread-2-item-5",
+            "@type": "types:ThreadItem",
+            "co:itemContent": {
+                "@id": "kb:message-5"
+            },
+            "types:threadNextItem": {
+                "@id": "kb:message-thread-2-item-6"
+            }
+        },
+        {
+            "@id": "kb:message-thread-2-item-6",
+            "@type": "types:ThreadItem",
+            "co:itemContent": {
+                "@id": "kb:message-6"
+            },
+            "types:threadPreviousItem": [
+                {
+                    "@id": "kb:message-thread-2-item-1"
+                },
+                {
+                    "@id": "kb:message-thread-2-item-5"
+                }
+            ]
+        }
+    ]
+}
diff --git a/tests/examples/test_validation.py b/tests/examples/test_validation.py
index b48cc765..e58abf2e 100644
--- a/tests/examples/test_validation.py
+++ b/tests/examples/test_validation.py
@@ -317,6 +317,9 @@ def test_message_thread(monolithic_ontology_graph: rdflib.Graph) -> None:
 def test_message_thread_PASS_validation():
     confirm_validation_results("message_thread_PASS_validation.ttl", True)
 
+def test_message_thread_XFAIL_validation():
+    confirm_validation_results("message_thread_XFAIL_validation.ttl", False)
+
 def test_relationship_PASS_partial() -> None:
     """
     This test should be replaced with test_relationship_XFAIL_full when the semi-open vocabulary design current as of UCO 0.8.0 is re-done.