TASK DEFINITION: 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.
PROBLEM: Andrew ordered a beer , Megan ordered a margarita , and Kelly ordered her third glass .

SOLUTION: Original

PROBLEM: The light seemed to come from the diamonds , as if an invasion of blue fireflies had been frozen in midair .

SOLUTION: Original

PROBLEM: A metal set of steps accessed the front door .

SOLUTION:
Original