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 recommended the senators by the student .
answer:
The student recommended the artist .


question:
The judges who helped the authors supported the professors .
answer:
The professors supported the judges .


question:
The president helped the artist .
answer:

The artist helped the president .