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 doctor that the scientist admired mentioned the presidents .
[A]: The presidents mentioned the doctor .


[Q]: The student avoided the scientists who called the lawyers .
[A]: The scientists avoided the student .


[Q]: The doctor introduced the judge .
[A]:
The judge introduced the doctor .