PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The only third-world countries with trade surpluses are those exporting oil, expensive crops such as coffee or minerals like gold, silver, copper.
http://www.w3.org/ns/prov#wasQuotedFrom
  • economist.com