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: My tongue flicks out and runs inside her low-cut shirt and bra , reaching until it flicks against her nipple .
Example Output: Original

Example Input: I have also had identical ' uncles ' at other clubs .
Example Output: Changed

Example Input: " Of course , Avery , we 'll need authorization and powers of attorney for each of these clients , " Osgood said .
Example Output:
Original