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: A man wearing a black apron is cooking. Sentence 2: A man is cooking.

SOLUTION: A man is eating a restaurant.

PROBLEM: Sentence 1: A man playing scrabble with carrots, celery, onions, limes, apples and cauliflower in the pictures while his opponent has rocks spelled out on his tray. Sentence 2: Someone is playing scrabble.

SOLUTION: A man is playing tetris

PROBLEM: Sentence 1: There are a few firefighters surrounding a firetruck. Sentence 2: Firefighters surround firetruck.

SOLUTION:
Police and firefighters engaged in a battle for supremacy.