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 avoided the actor .
Example Output: The actor avoided the banker .

Example Input: The professors introduced the artists .
Example Output: The artists introduced the professors .

Example Input: The lawyers introduced the senator that the athletes mentioned .
Example Output:
The senator introduced the lawyers .