About: http://webisa.webdatacommons.org/291778807

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	None of the scenarios you describe shows to me that there is a need for such a feature
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com