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 doctors contacted the bankers behind the professors .

SOLUTION: The professors contacted the doctors .

PROBLEM: The lawyer called the senator in front of the president .

SOLUTION: The senator called the lawyer .

PROBLEM: The tourist supported the banker who the lawyer mentioned .

SOLUTION:
The lawyer supported the tourist .