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 man wearing blue jeans, blue shirt and a cap runs in front of a large truck on a street. Sentence 2: A man in blue jeans and a blue shirt is training for a marathan.
Example Output: A man runs on the street.

Example Input: Sentence 1: A married couple pose for pictures on a grassy hillside on a cloudy day. Sentence 2: The couple is on vacation
Example Output: The couple is married

Example Input: Sentence 1: A girl is dancing to music played by musicians on a stage. Sentence 2: A girl is dancing to a world famous band.
Example Output:
A girl is dancing at a concert