About: http://webisa.webdatacommons.org/273068832

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 was the first to detect, track, and determine the orbits all types of earth-orbiting satellites, space vehicles, and other orbiting objects.
http://www.w3.org/ns/prov#wasQuotedFrom	gpsinventor.com