PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • If data security is a concern when performing transactions of XML encoded data between computer systems, conventional standards and common practices have emerged to allow a web server to use some of the above XML processing tools (e.g., DOM, SAX, etc.) to perform XML processing such as digital signature validation, encryption, and decryption upon XML encoded data.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com