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.

Example Input: The presidents who the artist admired mentioned the secretaries .
Example Output: The secretaries mentioned the artist .

Example Input: The president thanked the author next to the artist .
Example Output: The author thanked the artist .

Example Input: The senator who the artist introduced helped the student .
Example Output:
The artist helped the senator .