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.

Ex Input:
Sentence 1: A pit crew working on a race car. Sentence 2: They are changing tires.

Ex Output:
People are working on a car.

Ex Input:
Sentence 1: A man in a baseball cap is playing a shooting game in an arcade with a friend. Sentence 2: A man is playing an arcade game the mall.

Ex Output:
A man is playing an arcade game.

Ex Input:
Sentence 1: A white dog walking beside a bicycler. Sentence 2: A puppy is running

Ex Output:
A dog walking beside a person on a bike.