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.

Q: The sport was too engaging to think about anything except where to aim the felon .

A: Changed
****
Q: She had been trying to narrow down a new definition , mathematically stated , of quantum probability .

A: Original
****
Q: The walls are sandstone with illumination and gold tapestry hanging .

A:
Changed
****