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 boy selling lemonade for$ 1 rides his bike with no hands as he advertises his product to a long line of people. Sentence 2: The boy is selling lemonade for a $1.

SOLUTION: A boy selling cookies to a group of people.

PROBLEM: Sentence 1: A black dog with a stuffed animal in its mouth is running and jumping through a snowy field. Sentence 2: There is a dog in a field

SOLUTION: The dog has nothing in its mouth

PROBLEM: Sentence 1: Two boys dig in the sand on a beach. Sentence 2: Two boys play at the beach

SOLUTION:
Two boys are swimming at the beach