PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However, user engagement, such as messages that required a response or attention, was growing nine times as fast as Twitter and Facebook combined.
http://www.w3.org/ns/prov#wasQuotedFrom
  • emarketer.com