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.

[EX Q]: said Ian in merchandise , " is this some strange test ?
[EX A]: Changed

[EX Q]: ' We 're at the end of the wharf , father .
[EX A]: Original

[EX Q]: The corridor was full of dust and settling debris as the boom of the explosion slowly ebbed away into the rattle and clatter of shifting rubble .
[EX A]:
Original