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: " Well , your listeners are hopefully already aware of who I 'm sleeping with . "
Example Output: Original

Example Input: Bodies began falling from the gaping holes of the buildings , stoking the lawn around the buildings .
Example Output: Changed

Example Input: Kae began to wonder if this creature could even be bested by human strength .
Example Output:
Original