Assertion: mountain | /r/CapableOf | form substantial block
Facets:
value: to regional air motion
type: TRANSITIVE-OBJECT
Source sentences:
text: The mountains form a substantial block to regional air motion causing winds in most valleys west of the Continental Divide to be very light, especially in fall and winter, while winds along and east of the crest of the Continental Divide are much stronger and typically blow from a westerly direction much of the cool half of the year.