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: People with numbers on their chests are running in a pack. Sentence 2: Marathon runners end up grouped together after a collision between runners.

Answer: People in a race are grouped together.


Question: Sentence 1: A blond woman pedals a bicycle while carrying a chair on her shoulders. Sentence 2: A woman is on stage performing.

Answer: A woman riding a bike.


Question: Sentence 1: A kid is jumping his bike over a fence. Sentence 2: A kid jumps his bike over a wooden fence.

Answer:
A person jumps on a bike.