About: http://webisa.webdatacommons.org/12355760

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	And just to prove how truly jaded this thought is, here are a couple of recent examples of people doing what you are looking for.
http://www.w3.org/ns/prov#wasQuotedFrom	metafilter.com