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: Yellow banners with a black lion print are hung across some trees in a sun-lit neighborhood. Sentence 2: There are advertisements for the local college hanging in the neighborhood.

SOLUTION: There are signs outdoors

PROBLEM: Sentence 1: Asian man riding a scooter watches for traffic. Sentence 2: A man is driving on the street.

SOLUTION: There is a man riding a scooter.

PROBLEM: Sentence 1: A gray dog is bouncing a soccer ball on his head in a grass field. Sentence 2: The dog's owner is teaching the dog tricks.

SOLUTION:
A dog is playing with a soccer ball.