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 stopped the tourists .
The tourists stopped the athletes .

The author avoided the actor .
The actor avoided the author .

The lawyers introduced the secretary .

The secretary introduced the lawyers .

