PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The present invention is a system through which seekers of a wide array of services can select, contact, converse, and pay for a service provider using a simple voice-transmission medium such as the telephone.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com