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 doctors stopped the artists .
Example Output: The artists stopped the doctors .

Example Input: The secretaries introduced the author .
Example Output: The author introduced the secretaries .

Example Input: The actor thanked the professors .
Example Output:
The professors thanked the actor .