| http://www.w3.org/ns/prov#value | Draw cross sections of a cold front and a warm front, showing the location and movements of the cold and warm air, the frontal slope, the location and types of clouds associated with each type of front, and the location of precipitation.+'''2.''' [http://en.wikipedia.org/wiki/Thunderstorm Thunderstorm] - [http://en.wikipedia.org/wiki/Tornado Tornado] - [http://en.wikipedia.org/wiki/Tropical_cyclon
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