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.

Input: Consider Input: The scientist who the tourists helped thanked the actors .

Output: The tourists thanked the scientist .


Input: Consider Input: The president encouraged the actors .

Output: The actors encouraged the president .


Input: Consider Input: The doctors contacted the bankers behind the professors .


Output: The professors contacted the doctors .