In this task, you're given a pair of sentences, sentence 1 and sentence 2, that agree with each other. Your job is to alter sentence 2 so that the pair 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.

Example Input: Sentence 1: A jockey on a horse jumping over two hurdles at once in the middle of a dirt field Sentence 2: Man practices his horseriding skills
Example Output: Nascar race ends in disappointment

Example Input: Sentence 1: Two women are sharing an umbrella walking down the sidewalk. Sentence 2: they are outside
Example Output: they are on mars

Example Input: Sentence 1: A boy wearing a black tee-shirt sits to enjoy a meal at a fast food restaurant. Sentence 2: A boy enjoys a meal at a fast food restaurant.
Example Output:
A girl rock climbs.