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 doctor that the scientist admired mentioned the presidents .

Ex Output:
The presidents mentioned the doctor .


Ex Input:
The author contacted the actors who believed the lawyers .

Ex Output:
The lawyers contacted the author .


Ex Input:
The artist helped the lawyer .

Ex Output:

The lawyer helped the artist .