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: She hated glass eggshells .
Example Output: Changed

Example Input: But that doesn 't explain the imprint of the wreckage .
Example Output: Changed

Example Input: Scout in the front and gunners at the flank .
Example Output:
Original