Assertion: cumulonimbus cloud's base | /r/HasProperty | flat
Facets:
value: often
type: DEGREE
value: with a very dark wall
type: OTHER
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.
text: The base of cumulonimbus clouds is usually flat, but the clouds are very large and fluffy in appearance.
text: The base of the cloud is often flat with a very dark wall like feature hanging underneath, and may only lie a few hundred feet above the Earth's surface.
text: The base of each cloud is flat and the top of each cloud has rounded towers.
text: Since the height of this level is fairly constant at any particular time, then the bases of cumulus are usually flat.
text: The top of the clouds are puffy, but the base of the clouds tend to be flat, and they form at about 1000m off the ground.
text: The base of each cloud is flat and the top of each cloud has rounded towers.