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

Output: Original


Input: Consider Input: The other students were determined to master the representative and then never use it again .

Output: Changed


Input: Consider Input: Jeff stood up and nearly fell flat on his face as he was still very much feeling the effects of the rum .


Output: Original