What is the average year in which the finish position was 13th?
CREATE TABLE table_name_30 (
    year INTEGER,
    position VARCHAR
)
SELECT AVG(year) FROM table_name_30 WHERE position = "13th"
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 year in which the finish position was 13th? ### Input: CREATE TABLE table_name_30 (
    year INTEGER,
    position VARCHAR
) ### Response: SELECT AVG(year) FROM table_name_30 WHERE position = "13th"