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 jockey on a horse jumping over two hurdles at once in the middle of a dirt field Sentence 2: Man practices his horseriding skills
Example Output: Nascar race ends in disappointment

Example Input: Sentence 1: A man in a black shirt and jeans is barbecuing outdoors. Sentence 2: A man is outside cooking on the grill.
Example Output: A man sits on the couch and reads.

Example Input: Sentence 1: A man, leaning against a concrete wall with his arms resting on top, looks over a balcony. Sentence 2: A man leaning on a wall, looking over a balcony.
Example Output:
A man is leaning against a wooden wall.