PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • On the other hand, customary materials may be used only because it is difficult or expensive to import materials such as plastic or aluminum.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nzdl.org