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: Behind a small gate lay a simple section of gray cobblestones .
Example Output: Original

Example Input: " Yeah " I ken .
Example Output: Changed

Example Input: Her silk shirt glided down her arms , hooked on her elbows before negotiating to pool at her feet .
Example Output:
Changed