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: Five hikers, one facing towards the camera and the others facing away from it, are walking through a rocky riverbed. Sentence 2: 5 hikers are fording a river.

SOLUTION: Five people are hiking.

PROBLEM: Sentence 1: Bearded man rock climbing. Sentence 2: This is the man's first rock climb.

SOLUTION: The man is outside.

PROBLEM: Sentence 1: A large black man wearing a red chicago shirt is sitting in a wheelchair by a blue lamp post. Sentence 2: A black man wearing a Chicago Bears shirt sits in a wheelchair by a lamp post.

SOLUTION:
A black man sits in a wheelchair by a lamp post.