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: " They leave the barrows and wagons in courtyards and side streets , covered by a tarp against the rain . "
Example Output: Original

Example Input: Corinne had her eyes closed and she looked serene , her long lashes two thick , dark crescents on her face .
Example Output: Original

Example Input: Out of the corner of my eye I actually saw several of my colleagues flinch , as if seeking shelter from the incoming shrapnel .
Example Output:
Original