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 scientist who the tourists helped thanked the actors .

SOLUTION: The tourists thanked the scientist .

PROBLEM: The tourist in front of the professors introduced the athletes .

SOLUTION: The athletes introduced the tourist .

PROBLEM: The scientist advised the professors that avoided the judges .

SOLUTION:
The professors advised the the judges .