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 athletes advised the secretary near the judges .
The judges advised the athletes .

The author stopped the actor .
The actor stopped the author .

The professor contacted the actor .

The actor contacted the professor .