PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • fossil fuel (a hydrocarbon deposit-petroleum, coal, or natural gas-derived from living matter of a previous geologic time and used for fuel; when burned, it releases carbon dioxide and other heat-trapping gases into the atmosphere)
http://www.w3.org/ns/prov#wasQuotedFrom
  • discoveryeducation.com