TASK DEFINITION: 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.
PROBLEM: Sentence 1: Some people are standing outside at a sidewalk book sale. Sentence 2: People browse a sidewalk book sale.

SOLUTION: A bookstore is on fire.

PROBLEM: Sentence 1: A man, wearing a short pink skirt, long striped socks, a pink tank top, and a hairnet, is juggling knives to the amusement of onlookers. Sentence 2: A clown performing

SOLUTION: A man is riding an elephant at the fair.

PROBLEM: Sentence 1: Two men look at a piece of heavy machinery in the snow. Sentence 2: Two men are staring at the scene of  a heavy machine stuck in precipitation build up.

SOLUTION:
Two men are building ki, in order to lift the heavy machine from the snow using telekinesis.