PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Natural gas is the most basic and the most important energy source which occurs in natural form mainly used for the purpose of generating electricity and some of the other uses includes heating process with the help of natural gas.
http://www.w3.org/ns/prov#wasQuotedFrom
  • toptenplus.com