user: Question: What is the Hanja for the Hamgyeong RR Romaja?
Columns: ['RR Romaja', 'M–R Romaja', 'Hangul', 'Hanja', 'Name origin', 'Capital', 'Region', 'Korean dialect', 'Post-1896 Provinces']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Chungcheong', "Ch'ungch'ŏng", '충청도', '忠淸道', 'Chungju ( 충주 忠州 ), Cheongju ( 청주 淸州 )', 'Gongju', 'Hoseo', 'Chungcheong dialect', 'Chungcheongbuk Chungcheongnam']
SQL:

assistant: SELECT "Hanja" FROM "Table" WHERE "RR Romaja" = 'Hamgyeong';