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 loudspeaker called out for everyone to pile on board in an orderly fashion .

Output: Original


Input: Consider Input: " I 'm pissing you .

Output: Changed


Input: Consider Input: So I went ahead and found the perfect combination of chemicals to essentially wipe a person 's short-term memory .


Output: Original