What are the average laps for jackie stewart?
CREATE TABLE table_54507 (
    "Driver" text,
    "Constructor" text,
    "Laps" real,
    "Time/Retired" text,
    "Grid" real
)
SELECT AVG("Laps") FROM table_54507 WHERE "Driver" = 'jackie stewart'
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 are the average laps for jackie stewart? ### Input: CREATE TABLE table_54507 (
    "Driver" text,
    "Constructor" text,
    "Laps" real,
    "Time/Retired" text,
    "Grid" real
) ### Response: SELECT AVG("Laps") FROM table_54507 WHERE "Driver" = 'jackie stewart'