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 tourists thanked the doctor .

A: The doctor thanked the tourists .
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Q: The tourists next to the doctors recognized the senator .

A: The doctors recognized the tourists .
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Q: The professor who the scientist mentioned avoided the banker .

A:
The banker avoided the scientist .
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