premise: An older man is kneeling and talking to a group of younger children, all in soccer uniforms. hypothesis: a cat sleeps soundly.
contradiction: The older man can never be a cat.|contradiction: older man is kneeling and talking to a group of younger children, all in soccer uniforms is different from a cat sleeps soundly.|contradiction: A cat is an animal, a man is a human.   If one sleeps then they can't be talking to agroup.