About: http://webisa.webdatacommons.org/81479978

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Alternatively, when the message is a voice message, the message is played out on a conventional audio circuit (not shown in FIG. 3) that is included in the portable acknowledge-back transceiver 122.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com