PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This invention in its preferred embodiment comprises an apparatus and process (including a computer program) for controlling unmarked lock-opening keys in a security systems, whereby the conventional metal keys used to unlock rooms or cars or other entities can be controlled even though unmarked.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com