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 lawyer mentioned the manager behind the scientists .

SOLUTION: The scientists mentioned the lawyer .

PROBLEM: The tourist contacted the lawyer .

SOLUTION: The lawyer contacted the tourist .

PROBLEM: The doctor by the senators encouraged the secretaries .

SOLUTION:
The secretaries encouraged the senators .