About: http://webisa.webdatacommons.org/88419419

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	I answered a different question here but most of the answer is relevant to your question.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com