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 presidents avoided the artists .
The artists avoided the presidents .

The tourist helped the artist who supported the senator .
The senator helped the tourist .

The judges admired the doctors .

The doctors admired the judges .