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]: Ian , with his Bug eyes , had invited me to visit him in St. Louis .
[EX A]: Changed

[EX Q]: I selected some weights .
[EX A]: Changed

[EX Q]: But as they neared the Great Hall and the sounds of a waltz could be heard , a swarm of bees took flight in her stomach .
[EX A]:
Original