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 artist by the authors contacted the lawyers .
answer:
The lawyers contacted the artist .


question:
The presidents that the authors recommended believed the actor .
answer:
The authors believed the presidents .


question:
The tourist thanked the scientist .
answer:

The scientist thanked the tourist .