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.

The secretary admired the judges .
The judges admired the secretary .

The senator who the artist introduced helped the student .
The artist helped the senator .

The president advised the student next to the author .

The student advised the president .