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: It makes a satisfactory clang in the silence and I turn to Adrian .
Example Output: Original

Example Input: A hard lecturing , and it was taking Marian longer to recover .
Example Output: Changed

Example Input: Something was off this time ; I could almost feel the heaps .
Example Output:
Changed