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 senator who the artist introduced helped the student .

A: The artist helped the senator .
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Q: The presidents who the artist admired mentioned the secretaries .

A: The secretaries mentioned the artist .
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Q: The authors recommended the senator that the lawyer introduced .

A:
The lawyer recommended the authors .
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