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: He needs a scapegoat .
Example Output: Original

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

Example Input: Kids call me " Morning " as a nickname ' cause my affections are A.M. .
Example Output:
Changed