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 judge saw the senators by the author .
The author saw the judge .

The scientists thanked the lawyer that contacted the students .
The students thanked the scientists .

The president that believed the artist encouraged the banker .

The banker encouraged the artist .