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.

Sentence 1: Guy with a mohawk cutting meat. Sentence 2: A guy with a blue mohawk is cutting beef.
A guy has a mohawk cutting meat.

Sentence 1: A man wearing blue jeans, blue shirt and a cap runs in front of a large truck on a street. Sentence 2: A man in blue jeans and a blue shirt is training for a marathan.
A man runs on the street.

Sentence 1: A girl wearing a brown jacket and jeans is sitting on a rock wall at the edge of a hill, there are several small carts in the background. Sentence 2: The girls is waiting for her parents.

A girl sitting on a rock.