PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • He cites a study by an international firm of energy consultants, Douglas-Westwood , which shows that in mature economies such as the US, there is a significant economic impact when oil sells at over $90/barrel.
http://www.w3.org/ns/prov#wasQuotedFrom
  • feasta.org