What is the Hanja for the sakju province?
CREATE TABLE table_42224 (
    "Former kingdom" text,
    "Province" text,
    "Hangul" text,
    "Hanja" text,
    "Capital" text,
    "Modern equivalent" text
)
SELECT "Hanja" FROM table_42224 WHERE "Province" = 'sakju'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the Hanja for the sakju province? ### Input: CREATE TABLE table_42224 (
    "Former kingdom" text,
    "Province" text,
    "Hangul" text,
    "Hanja" text,
    "Capital" text,
    "Modern equivalent" text
) ### Response: SELECT "Hanja" FROM table_42224 WHERE "Province" = 'sakju'