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.

Example Input: Shira is supposed to take a last look at the cottages she was interested in .
Example Output: Original

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

Example Input: I managed to get in landing position in diameter and then go limp as my legs , knees bent , slammed into the ground .
Example Output:
Changed