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 lawyer advised the presidents .
answer:
The presidents advised the lawyer .


question:
The athlete introduced the secretary .
answer:
The secretary introduced the athlete .


question:
The scientists helped the banker that advised the author .
answer:

The banker helped the scientists .