About: http://webisa.webdatacommons.org/368460665

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	The calling tone signal is a signal that is first transmitted when a facsimile signal is transmitted.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca