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: I tried to invent the group away from physical violence .
Example Output: Changed

Example Input: " But - " I dialed another informant and initiated a similar , but more circumspect , line of inquiry .
Example Output: Original

Example Input: Late at night on their second full day they sat and waited for a modification .
Example Output:
Original