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: Students are in a classroom, reading something off a paper. Sentence 2: The students are working on an assignment.

A: The students are reading together.
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Q: Sentence 1: Two young fair girls are smiling a posing together while they ride in a boat wearing floatation vests. Sentence 2: The twin girls celebrate their birthday aboard the cruise ship.

A: Two girls smile on a boat.
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Q: Sentence 1: A man in a blue shirt and vest crossing the street. Sentence 2: A man crossing the street without trouser to threat people.

A:
A man in casual wear crossing the street.
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