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 teenage boy is holding his skateboard. Sentence 2: A boy is posing with a skateboard.

SOLUTION: A boy is posing with a bicycle.

PROBLEM: Sentence 1: A man is cutting food on a watercraft at the dock as six pelicans float nearby in the water. Sentence 2: A man on a watercraft at the dock is cutting food as six pelicans float nearby.

SOLUTION: A man is eating food, on a watercraft as peilicans float nearby.

PROBLEM: Sentence 1: A man is standing on a stone structure with his arms out like a bird. Sentence 2: A man stretching his arms standing on a stone structure

SOLUTION:
A man sitting at a bus stop