About: http://webisa.webdatacommons.org/443542811

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	Their scheme is a failure in its current incarnation.EDIT: Missed the part where the operator limit was mentioned in the article.
http://www.w3.org/ns/prov#wasQuotedFrom	arstechnica.com