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: His Western boots were retained to a shine , and two pistols hung low at his side .
Example Output: Changed

Example Input: You were a walking and partying erection six days out of the week . "
Example Output: Original

Example Input: In the dank , damp bedclothes the sharp sulphur stink of the match flew like a yellow bird , rising on drafts , plunging through cracks .
Example Output:
Changed