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 actors introduced the secretaries .
[EX A]: The secretaries introduced the actors .

[EX Q]: The artist recommended the senators by the student .
[EX A]: The student recommended the artist .

[EX Q]: The authors saw the artists who recommended the scientist .
[EX A]:
The artists saw the the scientist .