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 thanked the judges .
answer:
The judges thanked the professors .


question:
The author contacted the actors behind the student .
answer:
The actors contacted the student .


question:
The tourists thanked the bankers that the authors encouraged .
answer:

The bankers thanked the authors .