PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • With respect to audio mail, recorded audio messages are sometimes transited between separated parties by dictating an audiotape cassette and sending it through the mail or alternate postal-type carrier, optionally in a mailer or other packaging vessel customized to receive standard-sized cassettes, with or without an enclosure such as a written letter or photograph.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com