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 introduced the scientists next to the author .
answer:
The scientists introduced the author .


question:
The lawyers that helped the managers called the president .
answer:
The managers called the lawyers .


question:
The manager avoided the professor .
answer:

The professor avoided the manager .