Which Round has a College of stanford, and an Overall smaller than 8?
CREATE TABLE table_39491 (
    "Round" real,
    "Pick #" real,
    "Overall" real,
    "Name" text,
    "Position" text,
    "College" text
)
SELECT AVG("Round") FROM table_39491 WHERE "College" = 'stanford' AND "Overall" < '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: Which Round has a College of stanford, and an Overall smaller than 8? ### Input: CREATE TABLE table_39491 (
    "Round" real,
    "Pick #" real,
    "Overall" real,
    "Name" text,
    "Position" text,
    "College" text
) ### Response: SELECT AVG("Round") FROM table_39491 WHERE "College" = 'stanford' AND "Overall" < '8'