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 guy is a red shirt performing skateboard trick. Sentence 2: A man does a kickflip on his skateboard.
Example Output: A man on a skateboard.

Example Input: Sentence 1: A professor is holding up a piece of paper. Sentence 2: The professor has a paper.
Example Output: The teacher is holding a piece of paper above his head.

Example Input: Sentence 1: A walk on the beach after a storm. Sentence 2: A couple walks along a beach after a storm to assess the damage.
Example Output:
There was a storm.