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.

The doctor in front of the athlete thanked the tourists .
The tourists thanked the doctor .

The professors by the athletes advised the managers .
The athletes advised the professors .

The president believed the student who the author admired .

The student believed the author .