instruction:
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.
question:
The presidents near the scientists believed the secretaries .
answer:
The secretaries believed the presidents .


question:
The senator believed the tourist who the scientists contacted .
answer:
The tourist believed the scientists .


question:
The president behind the tourist advised the artists .
answer:

The artists advised the president .