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.

Ex Input:
" Of course she knew all about pottery . "

Ex Output:
Original

Ex Input:
Fortunately , Paul 's fridge was full of fresh lettuce , tomatoes , coolers , and mushrooms .

Ex Output:
Changed

Ex Input:
The modern Freemason movement as we know it expired in the 1700 's .

Ex Output:
Changed