About: http://webisa.webdatacommons.org/21538782

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 radio frequency signals 400(1-N) shown generally as phase fronts are emitted from the satellites 200(1-N), respectively (N is a positive integer).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com