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 black dog is running along side a bigger tri-colored dog that is carrying a rope toy in its mouth. Sentence 2: A small dog running next to a colorful dog carrying an object in it's mouth.

SOLUTION: Two dogs are riding in a car

PROBLEM: Sentence 1: A bearded man wearing a painter's cap is playing the xylophone on the side of a busy walkway. Sentence 2: New Orleans street performer

SOLUTION: A man is clean shaven.

PROBLEM: Sentence 1: Two people riding an elephant through a river. Sentence 2: People riding an elephant

SOLUTION:
People riding a donkey