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: It was Friday , herding us an extra hour extension at our dorm .
Example Output: Changed

Example Input: He shook his head , feeling like Daffy Duck doing an over-the-top wet , slobbery hunk .
Example Output: Changed

Example Input: I got the article finished , and I 'll reproduce it here .
Example Output:
Original