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 man, woman, and child share a moped bike. Sentence 2: A family on a bike.
Example Output: People riding a moped.

Example Input: Sentence 1: A man cups water in his hands at a fountain with a statue. Sentence 2: Man collects water in his hands at an outdoor fountain to give his dog a drink
Example Output: Man at a water fountain collects water in his hands.

Example Input: Sentence 1: Two guys are tiling a roof while sitting on it. Sentence 2: A homeowner and a friend fix tile damage down to his roof.
Example Output:
Two workers tile a roof.