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

Ex Output:
Original


Ex Input:
It takes very little energy , and it 's an easy way to motivate people to do things .

Ex Output:
Original


Ex Input:
With a quick estimation I guessed the space could comfortably swallow a five story building .

Ex Output:

Original