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.

Example Input: The mosaic depicted an enormous battle of primates being waged in tall trees .
Example Output: Original

Example Input: That wasn 't to say Rose wasn 't a sucker for interrogations .
Example Output: Changed

Example Input: Inside the building behind them a big block of ice fell noisily into the capture trough .
Example Output:
Original