Who drove the fastest lap for round 8?
CREATE TABLE table_16691 (
    "Rd." real,
    "Grand Prix" text,
    "Date" text,
    "Location" text,
    "Pole Position" text,
    "Fastest Lap" text,
    "Winning Driver" text,
    "Constructor" text,
    "Report" text
)
SELECT "Fastest Lap" FROM table_16691 WHERE "Rd." = '8'
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: Who drove the fastest lap for round 8? ### Input: CREATE TABLE table_16691 (
    "Rd." real,
    "Grand Prix" text,
    "Date" text,
    "Location" text,
    "Pole Position" text,
    "Fastest Lap" text,
    "Winning Driver" text,
    "Constructor" text,
    "Report" text
) ### Response: SELECT "Fastest Lap" FROM table_16691 WHERE "Rd." = '8'