PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Many using services other than just gmail, like calendar, maps, youtube, picasa, google plus, documents and so on logged in to google all the time generating more ad revenue and tracking user behavior (meaning even better ads targeting).
http://www.w3.org/ns/prov#wasQuotedFrom
  • dailytech.com