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 senator believed the artist who the banker supported .

SOLUTION: The artist believed the senator .

PROBLEM: The banker stopped the athletes that the actor called .

SOLUTION: The athletes stopped the banker .

PROBLEM: The artists contacted the professors near the student .

SOLUTION:
The student contacted the artists .