PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • As an aside: as far as I know, Outlook will always first use some IE component to check if the link exists. (That is surely true for other Office applications such as Excel and Word.) Only when a link gives some response, the default browser will be opened (optionally even with a changed URL, in case of a redirect response).
http://www.w3.org/ns/prov#wasQuotedFrom
  • superuser.com