PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The web browser 122 (or another program) provides a user interface feature such as a button or menu item, e.g., an ???E-mail Page??? button, which, when selected by the user, causes the filtered page document 114 to be attached or embedded in the e-mail message 150.
http://www.w3.org/ns/prov#wasQuotedFrom
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