About: http://webisa.webdatacommons.org/395195959

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 transmitting equipment acknowledges that the receiving equipment is a facsimile receiving equipment by receiving the single tone signal of 2.1 kHz transmitted from the receiving equipment.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es