premise: A man in a black shirt and jeans walks beside a woman in black pants and a flowery shirt in front of a refreshment stand with others walking nearby. hypothesis: A man and women at a nudist colony buying refreshments while onlookers stare at them.
contradiction: People are a nudist colony do not wear clothes.  Since the man is wearing a black shirt and jeans and the woman is wearing black pants and a flowery shirt they are not nude.