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: She had been trying to narrow down a new definition , mathematically stated , of quantum probability .

Output: Original


Input: Consider Input: " I 'll send you buggers . "

Output: Changed


Input: Consider Input: I 'd only spent the majority of English class scribbling out his ire on the back of my pencil case .


Output: Changed