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: " If I tell you what 's bothering me , will you rev up ? "
Example Output: Changed

Example Input: I have also had identical ' uncles ' at other clubs .
Example Output: Changed

Example Input: Nothing will put Obscura on lockdown faster than finding out you 've located their bug .
Example Output:
Original