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: " I know most authors hate doing signings , but I can promise you a success !
Example Output: Original

Example Input: She could smell Ashton 's cologne , a scent she now found revolting .
Example Output: Changed

Example Input: The snow was that thick that it made it hard to see beyond a frog or two , and the witch was still deep in the forest .
Example Output:
Changed