PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • When the CA is a third party separate from the user and the system, then it is called the Registration Authority (RA), which may or may not be separate from the CA.[11] The key-user binding is established, depending on the level of assurance the binding has, by software or under human supervision.[citation needed]
http://www.w3.org/ns/prov#wasQuotedFrom
  • wikipedia.org