PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • One approach is to note that convection is a thermal process driven by the temperature difference between the warm surface and the cool heights.
http://www.w3.org/ns/prov#wasQuotedFrom
  • energybulletin.net