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 doctor saw the lawyers .

Answer: The lawyers saw the doctor .


Question: The tourists thanked the doctor .

Answer: The doctor thanked the tourists .


Question: The scientist thanked the professor .

Answer:
The professor thanked the scientist .