PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Many people rely on services such as Google Docs, gmail, that could be killed or blocked at any time.
http://www.w3.org/ns/prov#wasQuotedFrom
  • thesocietypages.org