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 tourists avoided the athlete near the doctor .
The athlete avoided the doctor .

The doctor that the scientist admired mentioned the presidents .
The presidents mentioned the doctor .

The president encouraged the athletes that the professor called .

The athletes encouraged the professor .