About: http://webisa.webdatacommons.org/305715997

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 network of reference stations as claimed in claim 46 further comprising an alerting circuit to send an alert to a location other than the positioning system, if the position of the positioning system is equal to an alert position.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com