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: But the moment he crossed that border , her head began to ring in the strangest way , as though a thousand vibrations stowed the Dead Forest .
Example Output: Changed

Example Input: She presented him with her back and it was all Jason could do to pull the tab up instead of down .
Example Output: Original

Example Input: " I du n no , maybe the surety is backed up again ? "
Example Output:
Changed