This Chatbot is used to get information from Wikipedia.So user can get instant replay regarding their queries. wit.ai is used as entity tagger. All the queries are categorized by wit using its entity recognizer. When wit recognizes the entity then it is passed to Wikipedia module for relevant search. We can train the wit app by correcting its entity tagging on the wit interface. So next time it can correctly tag the entity. It is approved by Facebook and can be find as @Wiki_bot on your Facebook messenger.
Please find below the link of wiki bot , you need to access it from your Facebook messenger.