PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The fact that there is higher demand (from countries like China) and lack of supply (the easy to drill stuff is mostly gone, and we have to go deeper into the Earth and through dirtier substances like tar sands to get oil) has a much bigger impact on prices.
http://www.w3.org/ns/prov#wasQuotedFrom
  • usgreenchamber.com