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.
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Question: The worms were snake-like things that spat venomous poison and had huge mandibles surrounding multiple rows of razor-sharp teeth .

Answer: Original


Question: I am not preaching , and Heaven knows I do not pretend to be better than anyone else .

Answer: Original


Question: Maria was silent , but waved her hands back and forth to signal our rescuers to reorient their path .

Answer:
Original