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 banker stopped the actors .
Example Output: The actors stopped the banker .

Example Input: The tourist in front of the professors introduced the athletes .
Example Output: The athletes introduced the tourist .

Example Input: The lawyer mentioned the scientist .
Example Output:
The scientist mentioned the lawyer .