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 in front of the professor thanked the bankers .

Output: The professor thanked the scientist .


Input: Consider Input: The presidents near the scientists believed the secretaries .

Output: The secretaries believed the presidents .


Input: Consider Input: The tourist helped the scientists who the professor advised .


Output: The professor helped the tourist .