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 actor behind the judge supported the student .
[EX A]: The judge supported the actor .

[EX Q]: The senators called the actors who the banker helped .
[EX A]: The banker called the senators .

[EX Q]: The professors introduced the author .
[EX A]:
The author introduced the professors .