PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A r still further object of this invention is to provide an improved process for increasing the permeability of calcareous formations which produce oil or gas or other valuable fluids.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com