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 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 man in a blue jacket smiles back at the camera, positioned in front of a lake or large river on a clear sunny day. Sentence 2: A man is posing for a picture outside.
Example Output: A man is snowboarding down a huge mountain.

Example Input: Sentence 1: People holding a white banner above their heads with black markings on it while in the squatting position. Sentence 2: There is a white banner.
Example Output:
the banner is black.