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: But do not stand in the way of my classmate .

Answer: Changed


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

Answer: Changed


Question: You are conditioned to be with him .

Answer:
Changed