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 author who the doctor thanked supported the professor .

Output: The professor supported the author .


Input: Consider Input: The president helped the secretary .

Output: The secretary helped the president .


Input: Consider Input: The actors introduced the secretaries .


Output: The secretaries introduced the actors .