Name the winning driver for 20 april
CREATE TABLE table_27534 (
    "Round" text,
    "Circuit" text,
    "Date" text,
    "Pole Position" text,
    "Fastest Lap" text,
    "Winning driver" text,
    "Winning team" text
)
SELECT "Winning driver" FROM table_27534 WHERE "Date" = '20 April'
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: Name the winning driver for 20 april ### Input: CREATE TABLE table_27534 (
    "Round" text,
    "Circuit" text,
    "Date" text,
    "Pole Position" text,
    "Fastest Lap" text,
    "Winning driver" text,
    "Winning team" text
) ### Response: SELECT "Winning driver" FROM table_27534 WHERE "Date" = '20 April'