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: Iona 's control was fracturing .
Example Output: Original

Example Input: I 've roped them all in and they can 't get away ! "
Example Output: Original

Example Input: I have another class during his group sessions , so I couldn 't attend them , but he emailed the worksheets to me . "
Example Output:
Original