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 steamer trunks weren 't there when they left , though he conceded they might have been hidden behind the plywood sheets .
Example Output: Original

Example Input: It was titled : Riddle of the Pink Pyjamas The writing was hard to make out .
Example Output: Original

Example Input: And so we can take over for each other with as little disruption to the actual attorneys as possible if something goes wrong .
Example Output:
Original