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 tourists in front of the athlete introduced the secretary .

SOLUTION: The secretary introduced the athlete .

PROBLEM: The artist by the tourist encouraged the author .

SOLUTION: The author encouraged the artist .

PROBLEM: The professors thanked the actor .

SOLUTION:
The actor thanked the professors .