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.

Example Input: Sentence 1: A young thin man with a backpack wearing striped t-shirt and glasses is walking on the street and looking at something on his right. Sentence 2: A young black man with a backpack walks down the street at night.
Example Output: A young man with a backpack walks down the street.

Example Input: Sentence 1: People waiting at a bus stop. Sentence 2: Men and women waiting at a bus stop
Example Output: People waiting on the street

Example Input: Sentence 1: The man repels down the side of a cliff. Sentence 2: there is a person skiing and he fell and hurt himself
Example Output:
a man is on a mountain falling quickly