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 student contacted the artist who the tourists recommended .

SOLUTION: The artist contacted the tourists .

PROBLEM: The tourist that the authors recognized stopped the lawyer .

SOLUTION: The authors stopped the tourist .

PROBLEM: The scientist stopped the secretaries by the actors .

SOLUTION:
The actors stopped the scientist .