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 professors that called the president avoided the student .

Ex Output:
The student avoided the president .


Ex Input:
The author contacted the students who recommended the professors .

Ex Output:
The students contacted the author .


Ex Input:
The doctors near the senators helped the athlete .

Ex Output:

The athlete helped the doctors .