PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The use of fossil fuels, such as petroleum, natural gas and coal, in power plants supplies the vast majority of the world's electricity today; the International Energy Agency states that nearly 80% of the world's power comes from these sources.[16] The fire in a power station is used to heat water, creating steam that drives turbines.
http://www.w3.org/ns/prov#wasQuotedFrom
  • thefullwiki.org