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]: My body throbs with pain all over - an aching pull deep in my calf ; a sharper twinge in my right hip .
[EX A]: Original

[EX Q]: As they expand they can add more stoves . "
[EX A]: Original

[EX Q]: " Look , the furnace thing wasn 't deadly .
[EX A]:
Original