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 senators introduced the scientists next to the author .

SOLUTION: The scientists introduced the author .

PROBLEM: The judges contacted the doctor that saw the bankers .

SOLUTION: The doctor contacted the judges .

PROBLEM: The president supported the artist .

SOLUTION:
The artist supported the president .