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: Production lines slowed , then came to a standstill , because the workers were no longer showing up .
Example Output: Original

Example Input: Your nightly search might be merely a manifestation of the stress of what happened to you that day .
Example Output: Original

Example Input: If you feel like dozing off , go ahead and do so .
Example Output:
Original