About: http://webisa.webdatacommons.org/225905386

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	Check them out if you have not yet; you may benefit from some of the ideas, particularly in the last post.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com