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: Cobblestone street and line of storefronts Sentence 2: There are people walking down the street.
Example Output: There are stores along a street.

Example Input: Sentence 1: A smiling construction worker with a white helmet. Sentence 2: He has been hit on the head before
Example Output: His head is protected

Example Input: Sentence 1: Two people grocery shopping at Walmart. Sentence 2: Married couple shopping for groceries
Example Output:
Two people are pushing a cart.