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

Example Input: ' undress , ' Brick screamed .
Example Output: Changed

Example Input: I 'm annoyed with him because I can 't Erase his memories , not because I like him . "
Example Output:
Original