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: " And you bombed the ship , " Aria added .
Example Output: Original

Example Input: Charles was worried because when you were summoned by the Council , the algorithm gave you only a location and a half-hour window of time .
Example Output: Original

Example Input: " So the litigation is used to shock the market ? "
Example Output:
Original