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.
--------
Question: I opened my eyes and saw the woman retching onto the floor .

Answer: Changed


Question: She had been trying to narrow down a new definition , mathematically stated , of quantum probability .

Answer: Original


Question: Isn 't your brother like the best invention ever ?

Answer:
Changed