PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • And things that include natural gas as a raw material, such as olefin plastics, propylene and ethylene, should be cheaper to make here.
http://www.w3.org/ns/prov#wasQuotedFrom
  • dailyreckoning.com