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: Seconds later it exploded , sending out a spray of small metal rods .
Example Output: Original

Example Input: Angelica focused on her fingers , playing with a loose thread on the coverlet .
Example Output: Original

Example Input: His heart lies at home with his wife and her brats .
Example Output:
Original