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 artist behind the lawyer saw the professor .

Ex Output:
The professor saw the lawyer .


Ex Input:
The lawyer contacted the author .

Ex Output:
The author contacted the lawyer .


Ex Input:
The judge helped the presidents that the bankers stopped .

Ex Output:

The presidents helped the judge .