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 very young boy in a black jacket, jeans, and tennis shoes holds himself at the top of a slide, waiting to go down. Sentence 2: The slide has a line of people waiting to use it.
Example Output: A boy is using a slide.

Example Input: Sentence 1: Two girls are standing outside. Sentence 2: Two girls stand outside while waiting for their friends.
Example Output: Two people stand around outdoors.

Example Input: Sentence 1: A man locking his bicycle to a metal pole. Sentence 2: A man locked his bicycle to a stop sign pole.
Example Output:
A person making sure no one steals his transportation.