Assertion: thunderstorm | /r/CreatedBy | cumulonimbus cloud
Facets:
Source sentences:
text: A thunderstorm is produced by a cumulonimbus cloud, or thunderhead, that includes rain showers, lightning, and thunder.
text: Thunderstorms are produced by cumulonimbus clouds and form when air rises rapidly.
text: A thunderstorm is produced by a cumulonimbus cloud, usually producing gusty winds, heavy rain and sometimes hail.