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 managers by the artist mentioned the presidents .
[EX A]: The artist mentioned the managers .

[EX Q]: The students called the lawyers .
[EX A]: The lawyers called the students .

[EX Q]: The tourist saw the professor .
[EX A]:
The professor saw the tourist .