premise: A man wearing a denim jacket and jeans welds on a bridge above water while wearing his safety mask. hypothesis: The man wearing an blue jumpsuit is doing construction on a bridge work while whistling.
contradiction: A denim jacket and jeans is a different outfit than a blue jumpsuit.|contradiction: a man either would be in  jeans or a jumpsuit.|contradiction: man can't be wearing blue jumpsuit if he is wearing denim jacket.