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: Victor shook his head in disagreement but he said nothing .
Example Output: Original

Example Input: He reached out to Anon , his arms ending in pies from which his thick black blood poured .
Example Output: Changed

Example Input: I didn 't need another relapse of this afternoon .
Example Output:
Original