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 actor by the artist supported the doctors .
[EX A]: The doctors supported the actor .

[EX Q]: The scientist who the tourists helped thanked the actors .
[EX A]: The tourists thanked the scientist .

[EX Q]: The senators who the bankers introduced contacted the artist .
[EX A]:
The bankers contacted the senators .