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 saw the lawyers .
The lawyers saw the doctor .

The senators recognized the judges .
The judges recognized the senators .

The secretaries that the judges believed encouraged the doctor .

The doctor encouraged the secretaries .

