premise: A man in a dark jacket stands next to a man dressed in brown reaching down into a bag. hypothesis: The men are wearing blue uniforms and wrestling in a competition.
contradiction: Men cannot be wrestling in a competition if he is reaching down into a bag.|contradiction: Brown is not blue.|contradiction: At least one man is wearing brown so the two men cannot be wearing blue uniforms. Standing next to someone is a relatively passive activity and requires no contact whereas wrestling is quite active and requires contact.