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 was born out of wedlock .
Example Output: Original

Example Input: " That 's why I 'm barreling through the files , trying to figure out what 's been overlooked . "
Example Output: Changed

Example Input: Human conflict is widespread and decreasing as disease spreads .
Example Output:
Original