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 blays with a black dog and a yellow ball. Sentence 2: The dog is a poodle.

SOLUTION: A man plays with a black dog.

PROBLEM: Sentence 1: Four people sitting on the grass close to brick stairs. Sentence 2: Four people are hanging out near the stoop.

SOLUTION: Four people are sitting outside.

PROBLEM: Sentence 1: four boys on a black top with a green and yellow basketball. Sentence 2: four sad boys on a black top with a green and yellow basketball.

SOLUTION:
four people on a black top with a green and yellow basketball.