PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The legal system of rights, tax breaks, inheritance, etc., of two people united as a family is an institution often called civil union.
http://www.w3.org/ns/prov#wasQuotedFrom
  • post-gazette.com