PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Although natural gas is a nonrenewable fossil fuel, it remains one of the least expensive and cleanest alternatives to combustion fuels such as coal or oil.
http://www.w3.org/ns/prov#wasQuotedFrom
  • techtarget.com