PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Historical U.S. government documents include architectural drawings, certificates, charts, drawings, electronic historical documents, forms, legal documents, letters, maps, memos, motion picture films, photographs, plans, posters, and other documents created or acquired and kept by the President and his staff, Congress, and Federal governmental agency employees and contractors as part of their off
http://www.w3.org/ns/prov#wasQuotedFrom
  • archives.gov