About: http://webisa.webdatacommons.org/193052909

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	While link only answers are a big NO NO, the article actually answers the question quite clearly:
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com