In this task, you're given a pair of sentences, sentence 1 and sentence 2, that agree with each other. Your job is to alter sentence 2 so that the pair 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 man long boarding down an empty street. Sentence 2: A skateboarder skating down a street.
Example Output: A man bicycles down a street.

Example Input: Sentence 1: A man stands behind a wall on a busy city street. Sentence 2: The man is obsured from view outside.
Example Output: The man is walking down a busy city street.

Example Input: Sentence 1: A conductor of a train leans out of a window and looks to the right, while another man inside of the carriage looks towards some gauges. Sentence 2: There are two people on a train looking at different things.
Example Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
People watch a train go by.

