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 tourist avoided the doctors .
The doctors avoided the tourist .

The presidents stopped the bankers .
The bankers stopped the presidents .

The artists in front of the managers helped the lawyers .

The lawyers helped the managers .