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 scientists called the judge that stopped the doctors .
The judge called the scientists .

The senators behind the artist recommended the presidents .
The presidents recommended the artist .

The professor advised the doctor that thanked the lawyers .

The doctor advised the professor .