In this task, you're given a pair of sentences, sentence 1 and sentence 2, that agree with each other. Your job is to alter sentence 2 so that the pair 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 playing ball at sunset. Sentence 2: A man is playing ball.
Example Output: A man is swimming in the pool.

Example Input: Sentence 1: A white dog is running with an orange fence behind him. Sentence 2: A white dog is running outside.
Example Output: A white dog is sitting on the porch.

Example Input: Sentence 1: Six children near a water fountain. Sentence 2: A group of children are by the water fountain.
Example Output:
A lonely child is lost in the desert with no water.