PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In order to achieve connectivity with traditional telecommunications systems and networks, such as legacy phone systems (PBXs) and the public switched telephone network (PSTN), a specialized hardware platform, according to the present invention, is necessary.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com