About: http://webisa.webdatacommons.org/276706166

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	This system relies principally upon terrestrial signals such as radio, cellular telephone and television broadcast signals that provide the synchronization required for positional triangulation.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com