In this task, you're given a pair of sentences, sentence 1 and sentence 2, that agree with each other. Your job is to alter sentence 2 so that the pair 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 group of people are repelling off of a building as a crowd watches on. Sentence 2: The crowd is watching a group of people repel off the buildings.

A: The group of people are in a marching band.
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Q: Sentence 1: Two children, one wearing purple, the other black, ride a single bike on the pavement. Sentence 2: Two children ride the same bike.

A: Two adults ride a double seater bike.
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Q: Sentence 1: A man is crafting a wooden piece using a tool and his feet. Sentence 2: Someone is using a tool.

A:
Nobody is using a tool.
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