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 neither agree nor 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: The man is cooking on the barbecue. Sentence 2: A man is cooking.

SOLUTION: A man is cooking at a party.

PROBLEM: Sentence 1: A man in a green sweater and hat plays red upright bass on a city street. Sentence 2: A man is playing an instrument.

SOLUTION: A man is playing an instrument for change.

PROBLEM: Sentence 1: A man on a bicycle rides on a mountain. Sentence 2: A man on a bicycle.

SOLUTION:
A man on a bicycle racing up the mountain.