About: http://webisa.webdatacommons.org/6683530

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	In areas with radar coverage such as this one, secondary radar continuously receives transmissions from aircraft transponder/ADS-B including position, altitude, speed and other parameters.
http://www.w3.org/ns/prov#wasQuotedFrom	airliners.net