premise: A woman dressed as an angel playing a game with children. hypothesis: A man dressed as a clown is talking to some children.
contradiction: When a woman is dressed as an angel and is playing a game with children, there is no reason to assume that there is also a man dressed as a clown who is talking to the children at the same time; the logical assumption would be that it is a religious event or pageant, and it would be very difficult to play a game and talk at the same time.