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 woman smiles with her old-fashioned sewing machine. Sentence 2: The sewing machine is old.

SOLUTION: The woman is knitting a scarf.

PROBLEM: Sentence 1: A blue charter bus driving by a woman in a pink hat making food for her shop. Sentence 2: The bus is driven by a person.

SOLUTION: The bus runs on nuclear power.

PROBLEM: Sentence 1: A black dog leaping over a hurdle. Sentence 2: A dog leaps over a hurdle.

SOLUTION:
A brown dog is sleeping indoors.