Which Grand Prix did David Coulthard win with Michael Schumacher in the pole position before round 9?
CREATE TABLE table_52450 (
    "Round" real,
    "Grand Prix" text,
    "Pole Position" text,
    "Fastest Lap" text,
    "Winning Driver" text,
    "Winning Constructor" text,
    "Report" text
)
SELECT "Grand Prix" FROM table_52450 WHERE "Winning Driver" = 'david coulthard' AND "Pole Position" = 'michael schumacher' AND "Round" < '9'
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: Which Grand Prix did David Coulthard win with Michael Schumacher in the pole position before round 9? ### Input: CREATE TABLE table_52450 (
    "Round" real,
    "Grand Prix" text,
    "Pole Position" text,
    "Fastest Lap" text,
    "Winning Driver" text,
    "Winning Constructor" text,
    "Report" text
) ### Response: SELECT "Grand Prix" FROM table_52450 WHERE "Winning Driver" = 'david coulthard' AND "Pole Position" = 'michael schumacher' AND "Round" < '9'