What is the average grid for vehicles manufactured by Aprilia and having run more than 16 laps?
CREATE TABLE table_46268 (
    "Rider" text,
    "Manufacturer" text,
    "Laps" real,
    "Time" text,
    "Grid" real
)
SELECT AVG("Grid") FROM table_46268 WHERE "Manufacturer" = 'aprilia' AND "Laps" > '16'
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 average grid for vehicles manufactured by Aprilia and having run more than 16 laps? ### Input: CREATE TABLE table_46268 (
    "Rider" text,
    "Manufacturer" text,
    "Laps" real,
    "Time" text,
    "Grid" real
) ### Response: SELECT AVG("Grid") FROM table_46268 WHERE "Manufacturer" = 'aprilia' AND "Laps" > '16'