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 small brown dog runs through the grass in front of another dog and their owners. Sentence 2: 2 dogs and their owners play in the field

SOLUTION: 2 large dogs run in the house

PROBLEM: Sentence 1: A person walking with a black umbrella walking in front of an iron fence. Sentence 2: Someone with an umbrella passing by a fence.

SOLUTION: A group of tourists with umbrella's peering through the picket fence.

PROBLEM: Sentence 1: The person is hiking. Sentence 2: A person is outside.

SOLUTION:
A person is watching t.v. on the couch.