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.
--------
Question: He used to spend hours perfecting the old books . "

Answer: Changed


Question: All were neatly arranged , with easels and wax tablets charting work in progress .

Answer: Original


Question: ' This is where I leave you Mr Chalfont , ' he said as he entered a code into the door confronting it to open .

Answer:
Changed