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 judges that called the author saw the artist .
The author saw the judges .

The secretaries who advised the actor supported the senators .
The actor supported the secretaries .

The presidents who recognized the scientist recommended the tourists .

The tourists recommended the presidents .