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: Punk rock teenager walks with a mean look on his face. Sentence 2: The angry teenager had a mean look on his face.

SOLUTION: The teenager walked with a mean look on his face.

PROBLEM: Sentence 1: Two people sit on a couch overlooking the view of a city. Sentence 2: An old couple enjoy the view.

SOLUTION: Two people sit.

PROBLEM: Sentence 1: Teenagers smoke cigarettes in a field. Sentence 2: Teenagers are outside.

SOLUTION:
Youths are outside smoking cigarettes.