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 scientists called the judge that stopped the doctors .

A: The judge called the scientists .
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Q: The senator thanked the secretaries .

A: The secretaries thanked the senator .
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Q: The author recognized the scientist who introduced the tourist .

A:
The tourist recognized the author .
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