About: http://webisa.webdatacommons.org/336756302

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 agree fully with your points, but these were referred to only eliptically in the original article as examples of places there could potentially be problems.
http://www.w3.org/ns/prov#wasQuotedFrom	slashdot.org