In this task, you are given a premise sentence. Your task is to write a new sentence by substituting the subject and object (i.e., the input's subject should be output's object and vice versa.). The generated sentence must be fluent and shouldn't change the voice (i.e., passive or active) of the input.

Example Input: The secretaries introduced the author .
Example Output: The author introduced the secretaries .

Example Input: The tourist who advised the doctors avoided the presidents .
Example Output: The doctors avoided the tourist .

Example Input: The presidents supported the doctor that the bankers helped .
Example Output:
The doctor supported the bankers .