TASK DEFINITION: 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.
PROBLEM: The scientist encouraged the secretaries in front of the lawyers .

SOLUTION: The secretaries encouraged the scientist .

PROBLEM: The secretary helped the judge that the scientists believed .

SOLUTION: The judge helped the scientists .

PROBLEM: The professors mentioned the scientists .

SOLUTION:
The scientists mentioned the professors .