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 rollerblader skates down a ramp with his arms in the air. Sentence 2: A rollerblader has his arms in the air.

SOLUTION: The rollerblader is a girl.

PROBLEM: Sentence 1: A group of people wearing yellow shirts, with one woman wearing an orange tank top, biking on stationary bikes. Sentence 2: A group of people are on stationary bikes

SOLUTION: A group of people riding motorcycles down a hill.

PROBLEM: Sentence 1: Man wearing black shirt bent over using a saw to cut through stone. Sentence 2: Man is cutting through stone.

SOLUTION:
A man is chopping wood.