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 girl wearing a pink and black shirt and jeans fixes her hair before walking up the stairs. Sentence 2: A girl is wearing a shirt.

SOLUTION: A girl is bald.

PROBLEM: Sentence 1: A black man wearing glasses peers out of a subway train at Wall Street. Sentence 2: A man with glasses on a train.

SOLUTION: A white man on peers out of a bus at Wall Street.

PROBLEM: Sentence 1: A group of race buggies travel down a racetrack. Sentence 2: There are many buggies on the racetrack.

SOLUTION:
A group of race buggies in a museum.