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 president called the secretary that helped the scientist .

A: The scientist called the president .
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Q: The tourists in front of the athlete introduced the secretary .

A: The secretary introduced the athlete .
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Q: The president mentioned the bankers .

A:
The bankers mentioned the president .
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