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: Late at night on their second full day they sat and waited for a modification .
Example Output: Original

Example Input: I go to the swing set , set my camera gently on a step , and wipe dew from one of the black leather seats .
Example Output:
Original