PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The first type of unit, boilers and process heaters, burns fuel such as natural gas, coal, and oil to produce heat or electricity.
http://www.w3.org/ns/prov#wasQuotedFrom
  • akbizmag.com