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 lawyer contacted the doctors in front of the actor .
Example Output: The actor contacted the lawyer .

Example Input: The senator saw the professors by the students .
Example Output: The professors saw the students .

Example Input: The athlete by the tourists recommended the senator .
Example Output:
The senator recommended the tourists .