In this task, you are given a sentence. You must judge whether a single noun or verb has been replaced with another word with the same part of speech. The inversion would result in the sentence sounding unnatural, So unnatural sentences will be considered changed. Label the instances as "Original" or "Changed" based on your judgment.

Example Input: " Oh , you 've met her applications ? "
Example Output: Changed

Example Input: And then they headed out the door , taking a preference to the locker rooms .
Example Output: Changed

Example Input: He grunted , making me wonder if anything I was saying was actually registering .
Example Output:
Original