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: Black and brown dog growling at brown cat hiding under wooden bench. Sentence 2: Black and brown dog growling at brown cat
Black and brown dog nursing brown cat

Sentence 1: Two teenagers are playing wrestling game in the park. Sentence 2: People are playing.
Teenagers are playing basketball in the gymnasium.

Sentence 1: A military group stands at attention. Sentence 2: A group of soldiers are quiet.

A group of men chop down trees