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: I have obliterated an automatic satellite trace from my terminal to this phone and to an outside line .

Output: Changed


Input: Consider Input: He returned every lick , every nip .

Output: Original


Input: Consider Input: There have been a couple of small explosives lately .


Output: Changed