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 artists in front of the student thanked the manager .
Example Output: The manager thanked the student .

Example Input: The professor stopped the scientists .
Example Output: The scientists stopped the professor .

Example Input: The professors stopped the president .
Example Output:
The president stopped the professors .