PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This poses a very severe limitation, however: the end user can not know the decryption key (otherwise, a virus or other piece of software could also determine it), - thus it would be impossible to recover the data if required, as you have no way of obtaining the key to decrypt it.
http://www.w3.org/ns/prov#wasQuotedFrom
  • superuser.com