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 man sitting in a blue metal chair. Sentence 2: A man is exhausted and sitting down.
Example Output: A man is resting in a blue chair.

Example Input: Sentence 1: A stoplight is yellow next to a pedestrian crossing sign. Sentence 2: Someone is waiting to cross the street
Example Output: The stoplight will turn red shortly

Example Input: Sentence 1: A brown dog and a tan dog are playing in tall grass. Sentence 2: The dogs are playing with a ball.
Example Output:
The dogs are outside.