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: There is an odd undertone of fear in her voice , which piques my curiosity and concern .

Output: Original


Input: Consider Input: And how come you are familiar with the infirmary ?

Output: Changed


Input: Consider Input: Up close , I could see they were sectioned out of some sort of reptilian skin .


Output: Changed