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 professors recognized the lawyers who contacted the doctor .
answer:
The lawyers recognized the professors .


question:
The professors helped the doctor that the manager mentioned .
answer:
The doctor helped the manager .


question:
The managers in front of the athletes introduced the senators .
answer:

The senators introduced the athletes .