Assertion: cumulonimbus cloud's base | /r/AtLocation | close
Facets:
value: relatively
type: DEGREE
value: to the ground
type: LOCATION
Source sentences:
text: Though it’s difficult to tell visually, these clouds can be put into the category of multilevel clouds, meaning the base of a nimbostratus cloud can be found relatively close to the ground, but the tops of them can extend upwards into the middle cloud level.