About: http://webisa.webdatacommons.org/340236448

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	Follow Will's advice below, I found the article linked above is a draft and referred to the published version.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com