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 professors who avoided the students helped the tourists .
Example Output: The tourists helped the students .

Example Input: The artists who encouraged the scientists introduced the actor .
Example Output: The actor introduced the artists .

Example Input: The actor near the tourists called the managers .
Example Output:
The managers called the tourists .