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 in front of the secretary saw the presidents .

SOLUTION: The presidents saw the scientist .

PROBLEM: The senator contacted the artist near the judges .

SOLUTION: The artist contacted the senator .

PROBLEM: The scientist believed the bankers by the senator .

SOLUTION:
The bankers believed the scientist .