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: Thinking of my parents assisted me .
Example Output: Changed

Example Input: He could taste her helplessness on his tongue , her desire so intense that she cried out loudly with every touch .
Example Output: Changed

Example Input: Rocks that weighted well over four and five hundred pounds .
Example Output:
Original