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 lawyers helped the author next to the scientists .
The author helped the scientists .

The tourist advised the managers behind the athletes .
The athletes advised the tourist .

The doctor advised the scientists in front of the secretaries .

The scientists advised the secretaries .