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 authors helped the judge behind the secretaries .

Ex Output:
The judge helped the authors .


Ex Input:
The managers that the lawyer avoided believed the tourist .

Ex Output:
The lawyer believed the managers .


Ex Input:
The professor who recognized the tourist introduced the presidents .

Ex Output:

The tourist introduced the professor .