PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Nevertheless, the end result was a society in which exchanges, including the purchase and sale of labor-power, are in principle and to some extent in fact voluntary; and it was the historical existence of this partly voluntary system that permitted the elaboration of the ideal of a free society.
http://www.w3.org/ns/prov#wasQuotedFrom
  • howardrichards.org