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: Rosencrantz and Guildenstern have their own fates but I must be there for the last act , the last scene .
Example Output: Original

Example Input: Myra stopped rotating into the tissue .
Example Output: Changed

Example Input: Under the Keepers hands were being held and thighs groped , but harmless fun , at least for the moment .
Example Output:
Changed