PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Mr.???Matthews talked about his family???s recent trip to Vietnam, Berlin and other places.???He also talked???
http://www.w3.org/ns/prov#wasQuotedFrom
  • c-span.org