PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It is again noted that the present application is not limited to use in association with e-mail messages and may apply to other electronic messages where possible, including SMS messages, and other ???items???, including calendar entries, task list entries, and other items having a date-time stamp associated with them.
http://www.w3.org/ns/prov#wasQuotedFrom
  • freepatentsonline.com