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 senators called the judges who contacted the doctor .
Example Output: The doctor called the senators .

Example Input: The lawyers mentioned the students that the judge introduced .
Example Output: The students mentioned the judge .

Example Input: The tourists believed the senator who the banker recommended .
Example Output:
The banker believed the tourists .