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 contacted the author .
answer:
The author contacted the lawyer .


question:
The scientists called the judge that stopped the doctors .
answer:
The judge called the scientists .


question:
The secretary recognized the judges in front of the authors .
answer:

The authors recognized the secretary .