premise: Three bridesmaids in blue dresses hold the train of a bride's wedding dress. hypothesis: The three women are exercising in an aerobics class.
contradiction: The three women either hold the train of a bride's wedding dress or are exercising in an aerobics class.|contradiction: One cannot be exercising and holding the train of a dress at the same time.|contradiction: The women cannot be exercising and holding the train of a bride's wedding dress simultaneously.