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 Q]: She 'd gotten out of last period to take pictures and document the coming event for the yearbook .
[EX A]: Original

[EX Q]: I wanted to write a story that distilled love down to its essence .
[EX A]: Original

[EX Q]: That was why distributed network programs were used to recognize faces for security systems , or to inflict the shattered fragments of archaeological pottery .
[EX A]:
Changed