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.

[Q]: The banker by the tourist helped the professor .
[A]: The professor helped the banker .


[Q]: The lawyer called the artists near the athlete .
[A]: The artists called the athlete .


[Q]: The scientist near the professor stopped the presidents .
[A]:
The presidents stopped the scientist .