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.

Example Input: Sentence 1: a soccer player is diving for the ball. Sentence 2: An athlete dives for the soccer ball.
Example Output: The athlete is playing baseball.

Example Input: Sentence 1: A man in his office, is staring intently at the computer screen, while holding a red pen in his left hand. Sentence 2: A man in his office, is staring intently at the computer screen
Example Output: A man in his office, is not staring intently at the computer screen

Example Input: Sentence 1: An woman, wearing a straw hat, is presenting a variety of goods. Sentence 2: A woman is presenting a variety of goods.
Example Output:
A woman is presenting herself on stage at a club.