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:
What did they mean by repercussions from the head injury ?

Ex Output:
Original


Ex Input:
Towels , sheets , serviettes , tablecloths were all washed , starched and grayed , by Veronika .

Ex Output:
Changed


Ex Input:
And between the lack of bleeding and the quick calculation on a feast , I 'd already shown them my abilities .

Ex Output:

Changed