PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • SIP (Session Initiation Protocol) is a signalling protocol often used for Voice/Video communication (for example, in Ekiga and Qutecom), but also for other applications, including instant messaging and gaming.
http://www.w3.org/ns/prov#wasQuotedFrom
  • askubuntu.com