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:
Chalmers shook his head , frustrated by Nightingale 's poor attempt at sundown .

Ex Output:
Changed


Ex Input:
The Big Man pointed to a couple elves who 'd spent most of the trip napping in the back of the rainstorm .

Ex Output:
Changed


Ex Input:
I have lots of friends , ' Theo boasted .

Ex Output:

Original