PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In determining whether a matter is a permissive or a mandatory subject of bargaining, the Regions should focus on the subject matter of the provision and whether that subject matter was permissive or mandatory at the time of negotiations.
http://www.w3.org/ns/prov#wasQuotedFrom
  • flra.gov