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: She spent most of her days commanding a scout ship on the soles of Collective territory , gathering intelligence .
Example Output: Changed

Example Input: ' Hold quite still or I 'll gnaw you ! '
Example Output: Original

Example Input: As he passed the room , some candles started to burn without anyone lightening them .
Example Output:
Original