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 judge who the authors contacted recommended the students .

Ex Output:
The students recommended the judge .


Ex Input:
The judge saw the professor who mentioned the student .

Ex Output:
The professor saw the judge .


Ex Input:
The secretary recognized the professor in front of the tourist .

Ex Output:

The professor recognized the tourist .