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 president encouraged the actors .
The actors encouraged the president .

The artists avoided the scientists who recommended the professor .
The scientists avoided the the professor .

The student introduced the senators next to the manager .

The manager introduced the student .