PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • If a user does not have a subscription or other access rights to the third-party information (e.g., to a private database), the dark node may serve as an advertisement for the third-party's information.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com