PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • There???s no such thing as a free gas, if you will, so let???s deflate the helium hyperbole.
http://www.w3.org/ns/prov#wasQuotedFrom
  • edf.org