About: http://webisa.webdatacommons.org/137712266

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 may be some low-level API, but this API is locked away for all developers except MS and partners.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com