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: Up close , I could see they were sectioned out of some sort of reptilian skin .
Example Output: Changed

Example Input: Jason tried to articulate his guilt by telling himself that Hope would end up happier in the long run , but that didn 't help him now .
Example Output: Changed

Example Input: Despite the dark night , the lighted floors of several of the neighboring towers acted as shining floodlights , casting a stark illumination across the rolling lawns .
Example Output:
Changed