premise: when warm air mass passes over cold air mass, the water vapor in the warm air mass will condense sent2: clouds produce rain sent3: if it is raining, then the weather will be rainy sent4: a warm front is when warm air mass passes over a cold air mass sent5: cloudy means the presence of clouds in the sky sent6: clouds are formed by water vapor condensing.
hypothesis: a warm front causes cloudy and rainy weather