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 lines of colorful cars racing on a racetrack. Sentence 2: Some brightly colored cars are going extremely fast on a track.

SOLUTION: Some cars are racing

PROBLEM: Sentence 1: A group of dark-haired girls are walking together. Sentence 2: a group of friends walk

SOLUTION: a group of girls walks

PROBLEM: Sentence 1: A sports player in a red shirt is falling to the ground with another sports player in a blue shirt stands behind him. Sentence 2: There is a red team and a blue team.

SOLUTION:
A sports player in a red shirt is falling to the ground.