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: Everything we had shared , everything we worked to build , was falling into a shambles around me .
Example Output: Original

Example Input: I replied with a smiling face , it was a common thing among us ; replying a question with another .
Example Output: Original

Example Input: One day in school , the kids that were bullying her decided to ambush her .
Example Output:
Original