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: " What about radios , " Collins asked , " There 's a chance they might get some satellites back online . "
Example Output: Original

Example Input: The probe and crew had arrived early in the morning and followed me throughout the day .
Example Output: Changed

Example Input: He 'd gone to the Dragon school of warfare , I decided , as he came after me as fast as he could .
Example Output:
Original