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 professor that the lawyers thanked introduced the presidents .

Answer: The lawyers introduced the professor .


Question: The doctors who the actor encouraged contacted the scientist .

Answer: The scientist contacted the doctors .


Question: The scientists next to the secretary avoided the professors .

Answer:
The professors avoided the scientists .