PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The Australian claims that ???The Club of Rome used computer modelling to warn that the world would run out of commodities, including gold, mercury, silver, tin, zinc, petroleum, copper, lead, oil and natural gas, within 30 years.???
http://www.w3.org/ns/prov#wasQuotedFrom
  • theconversation.com