ISO639: Use structured answer

Yes, I mean the important bit is maintaining order with "what they gave us" and "what we turned it into.  As a specific example, if they entered "english", then the input is "English" and the result is "en".. if they entered "en", then the input is "en" and the result is "English". It's helpful to the user to always have the "answer" in the same spot no matter how they entered the query.