PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Environment defense fund say??? When we extract and burn fossil fuels such as coal or petroleum, we cause the release of carbon dioxide (CO2) and other heat-trapping ???greenhouse gases??? into the atmosphere.
http://www.w3.org/ns/prov#wasQuotedFrom
  • denverpost.com