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.

Ex Input:
Sentence 1: Four couples, all wearing green are dancing outdoors. Sentence 2: Several couples in green dancing outside.

Ex Output:
One couple is swimming.

Ex Input:
Sentence 1: Two young girls jumping and having fun on a trampoline in a backyard setting. Sentence 2: Two children are playing on a trampoline.

Ex Output:
Three children are jumping on a trampoline.

Ex Input:
Sentence 1: A man on a ladder painting a brick building blue. Sentence 2: The man is involved in a physical activity.

Ex Output:
A man is doing graffiti on a wall.