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 doctor recognized the artists who the managers called .
The artists recognized the doctor .

The professors thanked the judges by the artist .
The judges thanked the professors .

The senator believed the students .

The students believed the senator .