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: " I 'm gon na grab some grub and do some socializing .
Example Output: Original

Example Input: She hadn 't had time to marvel over it then , but she couldn 't help but do so now .
Example Output: Original

Example Input: He kicked and scratched , but I rebuffed his attempts with punches and jabs to the ribs .
Example Output:
Original