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: What did they mean by repercussions from the head injury ?
Example Output: Original

Example Input: She swiped her card , pushed through the metal turnstile , and stepped out onto the platform .
Example Output: Original

Example Input: The therapists here were big on that .
Example Output:
Original