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 banker in front of the secretaries thanked the professors .
answer:
The professors thanked the secretaries .


question:
The secretaries near the athletes contacted the author .
answer:
The author contacted the secretaries .


question:
The actors helped the scientists near the student .
answer:

The scientists helped the actors .