In this task, you're given a pair of sentences, sentence 1 and sentence 2, that neither agree with nor contradict each other. Your job is to alter sentence 2 so that the pair clearly contradict each other. Generated sentences must be short, with less than 15 words. New information can be introduced. Avoid using pronouns to confuse the subject of the sentence.
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Question: Sentence 1: Man works on lowering a train on tracks. Sentence 2: The man works on a life and death situation.

Answer: A worker at the trainyard.


Question: Sentence 1: A father and his son bonding. Sentence 2: A father and his son are playing catch.

Answer: A man has a son.


Question: Sentence 1: A bare-chested man wearing a blue cap and holding a knife is standing in front of a cinder-block wall. Sentence 2: a man holds a knife threateningly

Answer:
a man with out a top holds a knife