premise: A guy in glasses is biting into a pink marshmallow chick while somebody else is puckering their lips out wanting a bite. hypothesis: A man eats a hamburger while his friend asks for a bite.
contradiction: man is either eating marshmallow or hamburger.|contradiction: A man cannot be biting into a pink marshmallow chick while he also eats a hamburger.|contradiction: A man that bites marshmallow could not have been eating hamburger at the same time.