About: http://webisa.webdatacommons.org/57995580

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	Different sources will use different terms to mean different things - it is why the author in this particular case is choosing to define and give examples of the kinds of problems he means when he uses them.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com