Definition: 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.
Input: It seemed to be coming from the blackness of a shallow cave , formed by the overhang of a fallen archway and festooned with creepers and weeds .
