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.

Input: Consider Input: My tongue flicks out and runs inside her low-cut shirt and bra , reaching until it flicks against her nipple .

Output: Original


Input: Consider Input: It was titled : Riddle of the Pink Pyjamas The writing was hard to make out .

Output: Original


Input: Consider Input: Nicolae began the complicated weaving of difficult safeguards at all entrances to the mountain and the network of caves .


Output: Original