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 president recommended the tourist .
[EX A]: The tourist recommended the president .

[EX Q]: The doctors who the actor encouraged contacted the scientist .
[EX A]: The scientist contacted the doctors .

[EX Q]: The presidents near the scientist believed the actors .
[EX A]:
The scientist believed the presidents .