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.

Example Input: Sentence 1: A skateboarder does a stunt in the city. Sentence 2: A skateboarder does a trick for the crowd.
Example Output: A person is skateboarding in the city.

Example Input: Sentence 1: Man in a one shirt popping wheelies in the air on a red bicycle in a path lined by grass. Sentence 2: A man is riding a bike in a trick competition.
Example Output: A man is riding a bike.

Example Input: Sentence 1: A man in a white shirt is taking a jog on a paved path which runs through trees and grass. Sentence 2: A man is jogging on the path with his fiance.
Example Output:
A man is running outside.