PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Harder materials such as steel may be used to overcome these problems, but such bottle openers are considerably more expensive to fabricate.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com