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 guy looking at posters displayed outside of a building. Sentence 2: A guy looking at new movie posters.
Example Output: A guy looking at posters.

Example Input: Sentence 1: A skier does a jump in front of an empty chair lift. Sentence 2: The athlete is about to crash land.
Example Output: An athlete hangs in the air next to a machine.

Example Input: Sentence 1: A man skis on a snowy mountain. Sentence 2: A professional skier competing in a downhill event.
Example Output:
A man skiing down a mountain slope.