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.

Ex Input:
Sentence 1: A cowboy in the dirt on the ground next to a horse. Sentence 2: A horse and his rider.

Ex Output:
The horse was riding the cowboy until he got tired.


Ex Input:
Sentence 1: A family, grandparents, parents, and children, are sitting in front of a fireplace and a christmas tree opening presents. Sentence 2: A family, grandparents, parents, and children, are sitting

Ex Output:
A family, grandparents, parents, and children, are not sitting


Ex Input:
Sentence 1: A boy in his backyard grilling for his family. Sentence 2: A boy grilling.

Ex Output:

A boy cleaning a grill.