Structured, maintained API though, not general knowledge. I personally see an issue that someone has to accumulate their own stash of structured data for common knowledge (random examples) like: countries, zip codes, valid HTML5 element names, css properties, hex colors, common naming prefix/suffixes/professional titles, etc. A growing list of work repeated by each dev team/company for really no reason. No complaint about this repo, at all, just seeking if a solution exists.