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 artist that believed the president called the professor .
Example Output: The professor called the president .

Example Input: The actor behind the judge supported the student .
Example Output: The judge supported the actor .

Example Input: The artist thanked the author who called the professors .
Example Output:
The author thanked the artist .