PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The retaining ring 16 can be made of any suitable material such as aluminum or steel, with steel being preferred for strength and rigidity.
http://www.w3.org/ns/prov#wasQuotedFrom
  • patents.com