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 president behind the lawyers thanked the actor .
Example Output: The actor thanked the lawyers .

Example Input: The artists recommended the secretaries who admired the student .
Example Output: The student recommended the artists .

Example Input: The professors helped the lawyer near the doctor .
Example Output:
The lawyer helped the doctor .