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.

Example Input: Sentence 1: A white and black dog runs on the grass. Sentence 2: The dog is a dalmation.
Example Output: A dog is running outside.

Example Input: Sentence 1: A young boy wearing a name tag is running on a soccer field. Sentence 2: the boy is on the winning soccer team
Example Output: the young boy is wearing a name tag on the soccer field

Example Input: Sentence 1: A couple walking at a gathering with a balloon in the air behind them. Sentence 2: A couple at a birthday party.
Example Output:
A couple walking with a balloon.