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: Man in hat driving a steering a mule and cart. Sentence 2: He is outside.
Example Output: A lady in an overcoat rides a mule.

Example Input: Sentence 1: A person in a dark outfit is walking down a stairwell which contains a shadow of an object. Sentence 2: Wearing dark clothes, the person walked down the stairs.
Example Output: The man ran up the stairs, all the while not knowing whom he was chasing, although floodlights brightly lighted the stairwell.

Example Input: Sentence 1: Two guys barbecuing, one in blue shirt bending down, while the other in black shorts stands facing his back to the camera. Sentence 2: Two guys are cooking food.
Example Output:
Two men are making salads.