Assertion: dust storm | /r/HasProperty | caused
Facets:
value: usually
type: DEGREE
Source sentences:
text: A dust storm is caused when hot dry winds come before a big cold front.
text: A dust storm is usually caused by the top layer of earth becoming very dry over time, usually from a drought.
text: Dust storms are caused when strong winds lift loose earth and sand from arid landscapes and deposit them high in the atmosphere.