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 scientists thanked the lawyer that contacted the students .
[A]: The students thanked the scientists .


[Q]: The secretary that recognized the student stopped the artist .
[A]: The artist stopped the student .


[Q]: The president that encouraged the actors introduced the scientists .
[A]:
The scientists introduced the actors .