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.

Input: Consider Input: A hard lecturing , and it was taking Marian longer to recover .

Output: Changed


Input: Consider Input: He specializes in spyware . "

Output: Original


Input: Consider Input: We had a major debriefing in the Tower before we were allowed to leave .


Output: Original