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.

[Q]: The actor saw the senator .
[A]: The senator saw the actor .


[Q]: The lawyers that helped the managers called the president .
[A]: The managers called the lawyers .


[Q]: The scientist in front of the senators encouraged the author .
[A]:
The senators encouraged the scientist .