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: The toilet flushed , and shopkeeper turned back to watch Oksana emerge from the bathroom .
Example Output: Changed

Example Input: " That hurt like hel . "
Example Output: Original

Example Input: Some dropped trash into waste baskets .
Example Output:
Changed