PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Humanity has for some time been heavily dependent on the combustion of fossil fuels, such as oil, coal and natural gas, as sources of thermal energy.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wisegeek.org