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 doctor mentioned the tourist .

Output: The tourist mentioned the doctor .


Input: Consider Input: The president behind the doctors called the secretary .

Output: The secretary called the president .


Input: Consider Input: The doctor recommended the actor .


Output: The actor recommended the doctor .