About: http://webisa.webdatacommons.org/273501820

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	I would say that it not really that hard to write one myself, but oh well, if there is a library out there, then why not.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com