PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In looking at the history of early photographic apparatus and their makers since its beginnings, there were numerous ???How to ...??? publications and other ephemera that also took on the role of teaching photography.
http://www.w3.org/ns/prov#wasQuotedFrom
  • collectorsweekly.com