PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In order to do this, the personalization service generates a language model from content users have composed and stored in services such as Gmail, Twitter, and Facebook.
http://www.w3.org/ns/prov#wasQuotedFrom
  • amazon.com