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.
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Question: Sentence 1: A father and his son bonding. Sentence 2: A father and his son are playing catch.

Answer: A man has a son.


Question: Sentence 1: Brown dog with white marking on forehead coming down cement steps. Sentence 2: A brown dog is coming down with a stick.

Answer: A brown dog is coming down.


Question: Sentence 1: A female javelin thrower runs with spear in hand. Sentence 2: A javelin thrower is running with the spear in hand, trying to break the world record.

Answer:
A javelin thrower is running.