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 judge saw the senators by the author .
Example Output: The author saw the judge .

Example Input: The secretary called the authors that the banker contacted .
Example Output: The banker called the secretary .

Example Input: The doctor called the bankers in front of the lawyers .
Example Output:
The bankers called the lawyers .