Assertion: lightning | /r/CreatedBy | thunderstorm
Facets:
Source sentences:
text: If the discharge occurs inside the cloud it is called intra-cloud lightning, which accounts for about 75% of all lightning produced by a thunderstorm.
text: Lightning is produced in thunderstorms when liquid and ice particles above the freezing level collide, and build up large electrical fields in the clouds.
text: A lightning detector is a device that detects lightning produced by thunderstorms.
text: A lightning detector is a device that detects lightning produced by thunderstorms.