PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It is also plagued with problems such as declining output, dwindling reserves and a lack of expertise for exploiting petroleum in the deep waters of the Gulf of Mexico.
http://www.w3.org/ns/prov#wasQuotedFrom
  • news-leader.com