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: We flushed everything else with hydrogen gas and heavily chlorinated water . "
Example Output: Changed

Example Input: She was currently courting her sins to the local priest , a good looking young man who , unbeknownst to her , was in love with her .
Example Output: Changed

Example Input: I think she smiles too much , but beyond that her intelligence is sufficient and her howls are quite good , excellent in fact . "
Example Output:
Changed