Given some of the recent under-performance noticed by toxicity-sniffing tools, I thought I would ask what people here think of http://chat.dbpedia.org

Have a look: https://i.imgur.com/jKqRRTw.png

Is anyone else working on an open source text chatbot based on Wikidata?

I can offer no promises about how much it will teach you about Wikidata or Natural Language Processing, but a good starter task would be e.g. https://github.com/dbpedia/GSoC/issues/11