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 doctor contacted the judges .

A: The judges contacted the doctor .
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Q: The bankers believed the judges behind the presidents .

A: The judges believed the presidents .
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Q: The tourist mentioned the doctors who called the judges .

A:
The doctors mentioned the tourist .
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