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 large dog is laying on its back, outside on a blacktop, with its legs in the air. Sentence 2: Dog laying on its back
Example Output: Dog swimming in water

Example Input: Sentence 1: A rollerblader skates down a ramp with his arms in the air. Sentence 2: A rollerblader has his arms in the air.
Example Output: The rollerblader is a girl.

Example Input: Sentence 1: A black man in a tan sarong and head wrap, works outside shoveling a sand from a yellow truck on to a road, he is surrounded by green grass, shrubs, and plums of dust. Sentence 2: A person shoveling
Example Output:
Nobody is shoveling