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 man in a black shirt and gray hat gives the thumbs up to a crowd with one hand, while holding a microphone in the other. Sentence 2: a man gives a thumbs up

SOLUTION: a loan man on a horse

PROBLEM: Sentence 1: a spectacular dunk by a professional player with white and yellow on Sentence 2: the basketball player dunked the ball

SOLUTION: the baseball player hit a home run

PROBLEM: Sentence 1: A young boy wearing a gray sweater, blue jeans and boots hangs upside down in a tire swing. Sentence 2: A boy is playing on a swing.

SOLUTION:
A young boy in blue jeans is sitting below a tire swing.