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 author encouraged the judges who the managers introduced .
The judges encouraged the author .

The authors thanked the artist .
The artist thanked the authors .

The secretary called the bankers .

The bankers called the secretary .