Cyc

WikiPedia Description:

Cyc (pronounced /ˈsaɪk/ SYKE) is a long-term artificial intelligence project that aims to assemble a comprehensive ontology and knowledge base that spans the basic concepts and rules about how the world works. Hoping to capture common sense knowledge, Cyc focuses on implicit knowledge that other AI platforms may take for granted. This is contrasted with facts one might find somewhere on the internet or retrieve via a search engine or Wikipedia. Cyc enables semantic reasoners to perform human-like reasoning and be less "brittle" when confronted with novel situations. Source: https://en.wikipedia.org/wiki/Cyc

https://old.datahub.io/dataset/opencyc is unavailable; a version of it has been found: https://github.com/asanchez75/opencyc/blob/master/opencyc-latest.owl.gz

https://github.com/search?q=opencyc https://github.com/topics/opencyc https://github.com/topics/cyc