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:
A few nasty comments burrowed into my shortcomings as I walked out of the tunnel and into the night air .

Ex Output:
Changed


Ex Input:
" They leave the barrows and wagons in courtyards and side streets , covered by a tarp against the rain . "

Ex Output:
Original


Ex Input:
His thoughts were interrupted by the sound of a diesel engine battling the incline of the access road .

Ex Output:

Original