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 athletes stopped the tourists .

SOLUTION: The tourists stopped the athletes .

PROBLEM: The president avoided the managers that mentioned the doctor .

SOLUTION: The managers avoided the president .

PROBLEM: The athlete called the president .

SOLUTION:
The president called the athlete .