human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: RR Romaja, M–R Romaja, Hangul/Chosongul, Hanja, Area, Capital, Region, Country
###Question: Which country has a city with a Hanja of 平安北道?
gpt
SELECT Country FROM table WHERE Hanja = 平安北道