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 professor mentioned the scientists near the actors .
answer:
The actors mentioned the professor .


question:
The presidents near the tourists stopped the senator .
answer:
The tourists stopped the presidents .


question:
The professors that the authors recognized introduced the senator .
answer:

The senator introduced the professors .