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:
Caroline feared she would arrive back in Chicago with neither a father nor a telepath .

Ex Output:
Changed


Ex Input:
So , as a special treat and punishment for airplanes , Ms. Collins will go first . "

Ex Output:

Changed