About: http://webisa.webdatacommons.org/214875631

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 only problem I see with your approach is a growing list that depending upon your usage may eat up your memory
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com