Assertion: c airspace | /r/CapableOf | extend to generally 10,000 feet
Facets:
value: from the surface
type: LOCATION
Source sentences:
text: Class B airspace extends from the surface to generally 10,000 feet (3,000 m) MSL.
text: Class B airspace extends from the surface to generally 10,000 feet (3,000 m) MSL.