premise: Four men and three women, all in their beach attire, hang around a small cliff by the ocean as one man is about to dive into the water. hypothesis: Nobody has beach attire.
contradiction: If the men and women are all in beach attire, then it cannot be true that nobody has beach attire.|contradiction: The group is either in beach attire or nobody is in beach attire.|contradiction: If all people are in their beach attire, it is wrong to claim that nobody has beach attire.