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 jockey on a horse jumping over two hurdles at once in the middle of a dirt field Sentence 2: Man practices his horseriding skills

SOLUTION: Nascar race ends in disappointment

PROBLEM: Sentence 1: A person in a hat is playing with a boy on a beach. Sentence 2: An individual is running with a boy outside.

SOLUTION: Someone is playing tag with a girl inside the house.

PROBLEM: Sentence 1: Three naked little boys are playing in a river and are covered in mud; one is standing up. Sentence 2: Three little boys are playing in a river.

SOLUTION:
The boys are inside playing trucks.