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 manager recognized the author who thanked the professors .

SOLUTION: The author recognized the the professors .

PROBLEM: The tourist next to the author stopped the student .

SOLUTION: The author stopped the tourist .

PROBLEM: The professor thanked the scientist .

SOLUTION:
The scientist thanked the professor .