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 author helped the professor .

SOLUTION: The professor helped the author .

PROBLEM: The doctor mentioned the tourist .

SOLUTION: The tourist mentioned the doctor .

PROBLEM: The athletes helped the students that contacted the senator .

SOLUTION:
The students helped the athletes .