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: The realisation gives her host thanks , promising to return and finish her work with the roof .

Answer: Changed


Question: The invitation into the computer room was the straw that broke the camel 's back .

Answer: Original


Question: I unbuttoned the first three buttons of my shirt , causing the material to gape and reveal the lacy edges of my bra .

Answer:
Original