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 authors that the tourists mentioned helped the secretary .
[EX A]: The secretary helped the tourists .

[EX Q]: The presidents recognized the actor by the tourists .
[EX A]: The actor recognized the tourists .

[EX Q]: The student encouraged the athletes who helped the scientist .
[EX A]:
The scientist encouraged the student .