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

Ex Output:
Changed


Ex Input:
A loudspeaker called out for everyone to pile on board in an orderly fashion .

Ex Output:
Original


Ex Input:
Owen would bob up if they had an audience , particularly a female audience .

Ex Output:

Changed