PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • He said Facebook has drawn 30 premium publishers and major advertisers including Procter & Gamble and Verizon.
http://www.w3.org/ns/prov#wasQuotedFrom
  • adexchanger.com