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 author believed the artist .
Example Output: The artist believed the author .

Example Input: The president in front of the scientists supported the secretaries .
Example Output: The scientists supported the president .

Example Input: The doctors by the student supported the secretary .
Example Output:
The student supported the doctors .