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 large white dog growling at a large black dog. Sentence 2: A white dog is retaliating at a black dog's growl.

A: Two dogs are interacting with each other.
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Q: Sentence 1: A young boy, dressed in a karate gee and wearing a yellow belt, stands ready to defend himself inside a gym. Sentence 2: A yellow Belt Karate Student is fighting a White Belt Student.

A: the boy is a karate student
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Q: Sentence 1: A smiling woman is lying in a hospital bed. Sentence 2: A woman just had surgery.

A:
A woman is lying in a hospital bed.
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