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 with a shaved head and a button-up shirt looks into a microscope near a poster about red blood cells. Sentence 2: A scientist studies a vaccine.
Example Output: A man without hair near a poster about red blood cells is looking through a microscope.

Example Input: Sentence 1: A man in red shorts lifts his leg to kick another man in white shorts during a boxing match. Sentence 2: A man is winning a boxing match.
Example Output: A man is having a boxing match.

Example Input: Sentence 1: Big green leafy trees growing on a busy street. Sentence 2: People are picking apples off of the tree.
Example Output:
Leaves are growing on the tree.