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: " They leave the barrows and wagons in courtyards and side streets , covered by a tarp against the rain . "
Example Output: Original

Example Input: Was she doing Cammie and Travis a huge disservice by not staying and allowing Donovan to bring a doctor in for Cammie ?
Example Output: Original

Example Input: And one result is that my receptionist has to be guided at every point that departs from the expected path , however slightly .
Example Output:
Original