Assertion: controlled airspace | /r/HasProperty | generic term
Facets:
Source sentences:
text: Controlled airspace is a generic term that covers the different classifications of airspace and defined dimensions within which air traffic control
text: Controlled Airspace is a generic term that covers the different classifications of airspace (Class A, B, C, D and E airspace) and defined dimensions within which air traffic control service is provided to IFR flights and to VFR flights in accordance with the airspace classification.