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.

Late at night on their second full day they sat and waited for a modification .
Original

Tiny crystals my body yearns for , and my thoughts and worries drift from my head as my senses instantly heighten .
Original

Oh , and if you check out the file directory , the stuff Dad promised is there as well .

Original