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: " I tripped on one of those grenades you were talking about , " Daniel said .

SOLUTION: Changed

PROBLEM: The inside is remarkably clean ; no trash , freshly swept , and no smells of decay or garbage .

SOLUTION: Original

PROBLEM: The man read off a floor number , then directed me to metal rods , X-ray machines , and security gates .

SOLUTION:
Changed