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.

Ex Input:
She hadn 't realized that being with someone less perfect , who accepted her and her flaws , would provide more satisfaction in the long run .

Ex Output:
Original


Ex Input:
Seconds later it exploded , sending out a spray of small metal rods .

Ex Output:
Original


Ex Input:
I was having trouble analyzing what Charley and I were .

Ex Output:

Changed