CREATE TABLE table_40625 ("Japanese name" TEXT, "Kana" TEXT, "Hanja / Kanji" TEXT, "Korean name" TEXT, "Hangul" TEXT)

What is the Kana of the Province with a Korean name of Chungcheong-Namdo?
SELECT "Kana" FROM table_40625 WHERE "Korean name" = 'chungcheong-namdo'
SELECT "Kana" FROM "table_40625" WHERE "Korean name" = 'chungcheong-namdo'