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 'd really appreciate it if you 'd tell me what your connection is to Marc Dumont and why you 're here pestering me about my family .
Example Output: Changed

Example Input: Trevor 's guard flew up , but he was curious to hear what his dad wanted to disclose .
Example Output: Original

Example Input: The countdown began with a minute left .
Example Output:
Original