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.

[EX Q]: The lawyers behind the author saw the student .
[EX A]: The student saw the author .

[EX Q]: The tourist called the doctor .
[EX A]: The doctor called the tourist .

[EX Q]: The doctors encouraged the lawyer .
[EX A]:
The lawyer encouraged the doctors .