About: http://webisa.webdatacommons.org/134194251

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	Maybe there exists another rule and a different explanation, but what you suggest sounds logical and is perfectly sufficient for my purposes.
http://www.w3.org/ns/prov#wasQuotedFrom	usingenglish.com