Assertion: cold front's air | /r/HasProperty | behind cold front
Facets:
Source sentences:
text: A cold occlusion results when the coldest air is behind the cold front and a warm occlusion results when the coldest air is ahead of the warm front.
text: Occluded fronts are typically analyzed in the late stages of cyclone development when the coldest air associated with a cyclone is still well behind the cold front but the leading edge of cold air has advanced enough to displace the cooler air poleward of the warm, moist airmass (cold occlusion).