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: Woman climbing an artificial rock wall. Sentence 2: A woman is training to go mountain climbing.
People are ascending a climbing wall using grips for their hands and feet

Sentence 1: Three men standing around a car on a racetrack. Sentence 2: The car is stolen.
Three men are gathered around a car.

Sentence 1: The bat looks worn. Sentence 2: The bat was signed by a MLB player.

The bat isn't new.