user: Question: Name the iso for Chungcheongnam
Columns: ['RR Romaja', 'M–R Romaja', 'Hangul/Chosongul', 'Hanja', 'ISO', 'Area', 'Capital', 'Region', 'Country']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Chungcheongbuk', "Ch'ungch'ŏngbuk", '충청북도', '忠清北道', 'KR-43', '7,436', 'Cheongju', 'Hoseo', 'South Korea']
SQL:

assistant: SELECT "ISO" FROM "Table" WHERE "RR Romaja" = 'Chungcheongnam';