About: http://webisa.webdatacommons.org/79018151

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	Agree...here is an example of what I mentioned, very similar to the points you and others have made, but futile:
http://www.w3.org/ns/prov#wasQuotedFrom	websleuths.com