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: " In a convertible , " he said , " someone can get into your car using a butter knife . "
Example Output: Original

Example Input: Wow , talking to you must have deceived me !
Example Output: Changed

Example Input: For four years , the loss of Elizabeth had been the thorn in his side .
Example Output:
Original