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 Input:
Chalmers shook his head , frustrated by Nightingale 's poor attempt at sundown .

Ex Output:
Changed


Ex Input:
" You don 't mean the one we used to picnic underneath when the children were but motels . "

Ex Output:
Changed


Ex Input:
asked the constable , sitting at his desk , frowning at some papers .

Ex Output:

Original