About: http://webisa.webdatacommons.org/314719655

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	Steam, for example is using it (not for long, though, the next version of the client is based on Webkit).
http://www.w3.org/ns/prov#wasQuotedFrom	superuser.com