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: As they came closer he could hear snatches of conversations .

SOLUTION: Original

PROBLEM: Chalmers shook his head , frustrated by Nightingale 's poor attempt at sundown .

SOLUTION: Changed

PROBLEM: There were the sounds of metal against metal as burly guys lifted bars heavy with thorns .

SOLUTION:
Changed