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

Example Input: The presidents recognized the actor by the tourists .
Example Output: The actor recognized the tourists .

Example Input: The lawyer contacted the author .
Example Output:
The author contacted the lawyer .