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: He tapped on the overhead display to awaken it and then displayed a digital diagram .
Example Output: Original

Example Input: Then , grimacing , I altered my destination and turned the corner .
Example Output: Original

Example Input: The last time a blizzard of this magnitude had hit Big Falls had been in the latter part of the last century .
Example Output:
Original