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 artists mentioned the judges behind the secretary .

SOLUTION: The judges mentioned the artists .

PROBLEM: The athlete introduced the secretary .

SOLUTION: The secretary introduced the athlete .

PROBLEM: The lawyer that the judges recommended contacted the senator .

SOLUTION:
The senator contacted the judges .