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 authors recognized the secretaries .
Example Output: The secretaries recognized the authors .

Example Input: The president thanked the lawyer .
Example Output: The lawyer thanked the president .

Example Input: The lawyers who the scientists encouraged introduced the senators .
Example Output:
The senators introduced the scientists .