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.

Ex Input:
The professor called the secretaries .

Ex Output:
The secretaries called the professor .


Ex Input:
The bankers saw the athletes .

Ex Output:
The athletes saw the bankers .


Ex Input:
The student behind the author introduced the lawyers .

Ex Output:

The lawyers introduced the student .