Assertion: cumulonimbus cloud's base | /r/HasProperty | only 1000 meters
Facets:
value: above the ground
type: LOCATION
Source sentences:
text: The base of each cloud is often flat and may be only 1000 meters (3300 feet) above the ground.
text: The base of each cloud is often flat and may be only 1000 meters (3300 feet) above the ground.