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: A man, woman, and child share a moped bike. Sentence 2: A family on a bike.

SOLUTION: People riding a moped.

PROBLEM: Sentence 1: A man riding a green motorcycle jumping nine other green motorcycles. Sentence 2: A man crashed while jumping over obstacles on his motorcycle.

SOLUTION: A man is performing tricks on his powerfile bike.

PROBLEM: Sentence 1: Man in black with a feathered hat sits atop a horse. Sentence 2: A man poses on a horse before a horse show wearing a black feathered hat.

SOLUTION:
A man is sitting on a horse.