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 artist by the authors contacted the lawyers .
The lawyers contacted the artist .

The banker behind the professor encouraged the lawyer .
The lawyer encouraged the professor .

The student admired the presidents who introduced the actor .

The presidents admired the the actor .