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.

The doctors in front of the scientist recognized the banker .
The scientist recognized the doctors .

The doctors by the student supported the secretary .
The student supported the doctors .

The tourist called the doctor .

The doctor called the tourist .