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: " Books of them .
Example Output: Changed

Example Input: About the shootings . "
Example Output: Original

Example Input: The casserole , Collin was happy to notice , was her mother 's spaghetti casserole .
Example Output:
Original