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]: On Nick 's plate were pie and cookies , next to it sat a tall vanilla milkshake .
[EX A]: Original

[EX Q]: He used to spend hours perfecting the old books . "
[EX A]: Changed

[EX Q]: I walked in a wide semi-circle around her .
[EX A]:
Original