premise: Three children hold a boy's arms down while another boy in a hat shoots a water gun at him. hypothesis: The boy holds down his laughing nephew as his sister sprays him with water.
contradiction: Sentence one has another boy do the act, the second one has his sister, a girl, do it.|contradiction: The boy's sister was mistaken to be a boy instead of a girl.|contradiction: a boy shoots a water gun at a boy not invovling his sister.