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 scientist stopped the secretary .
[EX A]: The secretary stopped the scientist .

[EX Q]: The presidents near the scientist supported the secretary .
[EX A]: The secretary supported the presidents .

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