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 contacted the actors who believed the lawyers .
Example Output: The lawyers contacted the author .

Example Input: The artists called the tourists near the doctor .
Example Output: The tourists called the artists .

Example Input: The tourists in front of the senator thanked the student .
Example Output:
The student thanked the senator .