TASK DEFINITION: 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.
PROBLEM: The secretaries supported the student who the authors introduced .

SOLUTION: The student supported the secretaries .

PROBLEM: The authors behind the students encouraged the managers .

SOLUTION: The managers encouraged the students .

PROBLEM: The author thanked the presidents .

SOLUTION:
The presidents thanked the author .