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: A man in a blue shirt, jeans, and wearing a tool belt is climbing down a metal rod. Sentence 2: A person is at work.
A person is high off the ground.

Sentence 1: A group of men are standing around and drinking water with their bikes. Sentence 2: The men are at a park taking a rest.
A group of bikers are drinking water.

Sentence 1: People are watching a race on city streets. Sentence 2: a group of people were watching the boston marathon from the sidewalk

the people were watching a race that was on the city streets