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]: She deserved a slow and gentle swishing .
[EX A]: Changed

[EX Q]: I already got the wood and nails for them from a carpenter .
[EX A]: Original

[EX Q]: She saw a flash of light , and the arsenal fell straight down onto the ground .
[EX A]:
Changed