Assertion: aircraft | /r/HasProperty | 19,800 m
Facets:
Source sentences:
text: He and others believed that Soviet radar, which used American equipment provided during the war, could not track aircraft above 65,000 feet (19,800 m).
text: The Soviet Union, unlike the United States and Britain, had improved radar technology after the war, and could track aircraft above 65,000 feet (19,800 m).