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 artists mentioned the judges behind the secretary .
[EX A]: The judges mentioned the artists .

[EX Q]: The secretaries in front of the tourists saw the judge .
[EX A]: The judge saw the tourists .

[EX Q]: The president in front of the judges saw the scientists .
[EX A]:
The scientists saw the judges .