Prove yOu Read The ArticLe
"A doorway, gate, or other entrance, especially a large and imposing one." Source: https://en.oxforddictionaries.com/definition/portal
Create a piece of code (that acts as a portal) that allows commenting on a webpage when the user answers a specific questions related to that article. If answered correctly, the user can comment.
Massimo Banzi https://twitter.com/mbanzi/status/923507324886581248