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.

Q: The scientists helped the doctors in front of the authors .

A: The doctors helped the authors .
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Q: The presidents introduced the artists who encouraged the actor .

A: The artists introduced the the actor .
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Q: The judge encouraged the athlete .

A:
The athlete encouraged the judge .
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