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 scientist stopped the secretary .
answer:
The secretary stopped the scientist .


question:
The senators introduced the judge that stopped the managers .
answer:
The judge introduced the the managers .


question:
The managers by the artist mentioned the presidents .
answer:

The artist mentioned the managers .