PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A carbon offset is a purchase made to absorb or avoid the release of a ton of carbon to compensate for greenhouse gas emissions from electricity use, transportation, waste, and other sources.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cleanenergy.org