there was a startup called freebase that crowd sourced a knowledge graph. they got bought by google and shut down. some of the remanants are at wikidata and the

there was a startup called freebase that crowd sourced a knowledge graph. they got bought by google and shut down. some of the remanants are at wikidata and the google knowlege graph. https://www.wikidata.org/wiki/Q317521 https://www.wikidata.org/wiki/Q317521