About: http://webisa.webdatacommons.org/22344609

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	The test you link to is interesting as a starting point, but hardly conclusive.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com