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.

Q: Sentence 1: A man holding a sign and a man playing a guitar are speaking in front of a crowd. Sentence 2: The man is performing.

A: A man is holding a sign.
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Q: Sentence 1: A woman in a white shirt tries on a hat in front of a mirror. Sentence 2: The woman is pretty.

A: The woman is trying on clothes.
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Q: Sentence 1: A man balances a knife on his arm as another man watches. Sentence 2: The men have placed a bet on whether one of them can balance a knife on his arm.

A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
A man is watching another man balance something on his arm.
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