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.
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Question: The secretaries introduced the author .

Answer: The author introduced the secretaries .


Question: The author contacted the actors who believed the lawyers .

Answer: The lawyers contacted the author .


Question: The doctors next to the secretary avoided the presidents .

Answer:
The presidents avoided the doctors .