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 person is walking up stairs between two buildings. Sentence 2: The person is headed towards the roof of the building.
Example Output: A person is going up the stairs.

Example Input: Sentence 1: A high jumper is in the middle of her jump while still holding the pole. Sentence 2: A woman is high jumping.
Example Output: A person is holding a pole.

Example Input: Sentence 1: A man, woman, and two girls walk on the beach barefoot. Sentence 2: The man and woman are dating.
Example Output:
The group walks outside.