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.

[EX Q]: The artist contacted the judges .
[EX A]: The judges contacted the artist .

[EX Q]: The artists who encouraged the scientists introduced the actor .
[EX A]: The actor introduced the artists .

[EX Q]: The scientist by the actors encouraged the senators .
[EX A]:
The senators encouraged the actors .