About: http://webisa.webdatacommons.org/20558738

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	aratus, such as a facsimile apparatus, a DTMF signal and various types of tone signals need to be detected.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com