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.

Example Input: He would bend me over into the scalding spray , and we would have sex like that .
Example Output: Original

Example Input: " That 's why I 'm barreling through the files , trying to figure out what 's been overlooked . "
Example Output: Changed

Example Input: His stomach hurt , as if there were a black cauldron of fire brewing within it .
Example Output:
Original