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 tourists next to the doctors recognized the senator .

SOLUTION: The doctors recognized the tourists .

PROBLEM: The senators called the judges who contacted the doctor .

SOLUTION: The doctor called the senators .

PROBLEM: The banker recognized the scientist in front of the doctors .

SOLUTION:
The doctors recognized the banker .