About: http://webisa.webdatacommons.org/76040412

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 PSTN is any public switched telephone network provided by AT&T, GTE, Sprint, MCI, SBC, Verizon and others in the United States and countries other than the United States.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com