Assertion: lightning | /r/HasProperty | negative
Facets:
value: in polarity
type: LOCATION
value: usually
type: DEGREE
Source sentences:
text: Cloud-to-ground (CG) lightning is either positive or negative, as defined by the direction of the conventional electric current from cloud to ground.
text: Cloud-to-ground (CG) lightning is either positive or negative, as defined by the direction of the conventional electric current from cloud to ground.
text: Lightning from this area is called positive lightning.
text: In this case, the lightning takes the form of a discharge between a thundercloud and the ground, and is usually negative in polarity and initiated by a stepped branch moving down from the cloud.
text: In this case, the lightning takes the form of a discharge between a thundercloud and the ground, and is usually negative in polarity and initiated by a stepped branch moving down from the cloud.