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 with a shaved head and a button-up shirt looks into a microscope near a poster about red blood cells. Sentence 2: A scientist studies a vaccine.

A: A man without hair near a poster about red blood cells is looking through a microscope.
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Q: Sentence 1: Young happy toddler smiling and riding her horsey. Sentence 2: a young child is having fun with her pet horse

A: a young child enjoys herself
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Q: Sentence 1: The sign on the bin of crabs at the market says$ 12 a dozen and$ 6.50 for a half a dozen. Sentence 2: There is a big, red sign at the market.

A:
There is a sign at the market.
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