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: Two dogs play together and another runs after in a field. Sentence 2: The dogs are chasing a ball in the field.

A: Two dogs are running in a field.
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Q: Sentence 1: A group of people having a barbecue at a park. Sentence 2: The barbecue is to celebrate winning the soccer tournament.

A: Some people are having a barbecue.
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Q: Sentence 1: A man is dressed in police clothes with a helmet and shield. Sentence 2: The policeman is wearing his uniform when he pulls over a speeding car.

A:
The policeman is wearing his uniform.
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