About: http://webisa.webdatacommons.org/178265311

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	There are much more qualified people to comment here, but if I recall correctly, it was extensively discussed whether to include categories or not.
http://www.w3.org/ns/prov#wasQuotedFrom	mathoverflow.net