TASK DEFINITION: In this task, you're given a pair of sentences, sentence 1 and sentence 2, that neither agree with nor contradict each other. Your job is to alter sentence 2 so that the pair clearly 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: Two guys barbecuing, one in blue shirt bending down, while the other in black shorts stands facing his back to the camera. Sentence 2: Dinner is being prepared by the two brothers.

SOLUTION: Two men are barbecuing.

PROBLEM: Sentence 1: A man wearing a black leather vest with a rebel flag patch on it. Sentence 2: A man wearing a colorful scarf and a black leather vest with a rebel flag patch on it.

SOLUTION: A person is wearing a vest.

PROBLEM: Sentence 1: A young man with a v-neck considers a water jug while standing next to a black motorcycle. Sentence 2: A biker is taking a break from riding getting ready to drink some water

SOLUTION:
A guy is next to a two-wheeled vehicle.