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.

Example Input: The tourists saw the authors .
Example Output: The authors saw the tourists .

Example Input: The judges who helped the authors supported the professors .
Example Output: The professors supported the judges .

Example Input: The doctor called the managers who the tourist introduced .
Example Output:
The managers called the tourist .