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.

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.
Three children are jumping on a trampoline.

Sentence 1: Group of men in blue uniform are emptying supplies off the cargo plane. Sentence 2: The men are wearing blue
The men are sitting in a plane

Sentence 1: A group of black boys in a classroom setting wearing white shirts, listening to a speech about UNICEF. Sentence 2: A group of children are listening to a speech.

The white children sit in the classroom.