About: http://webisa.webdatacommons.org/45312696

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	You would really need to clarify your implementation, and make different methods whether you are adding or updating data.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com