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 actor near the managers saw the doctor .
The managers saw the actor .

The athletes stopped the tourists .
The tourists stopped the athletes .

The bankers in front of the author helped the doctor .

The author helped the bankers .