About: http://webisa.webdatacommons.org/99391177

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	Neither of these is going to help much in your situation - you need to do other forms of testing either way.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com