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 judges saw the artist .

Ex Output:
The artist saw the judges .


Ex Input:
The author stopped the actor .

Ex Output:
The actor stopped the author .


Ex Input:
The actor introduced the senator that the scientist recommended .

Ex Output:

The scientist introduced the actor .