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 senators who the authors recommended mentioned the banker .
answer:
The authors mentioned the senators .


question:
The scientist who the tourists helped thanked the actors .
answer:
The tourists thanked the scientist .


question:
The doctor stopped the presidents that believed the artist .
answer:

The presidents stopped the doctor .