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: " Shot by some gangbangers during a glob of your parents ' grocery store .
Example Output: Changed

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

Example Input: " Some of my best friends were losers ... some of my best girl friends , come to think of it .
Example Output:
Changed