What's the average attendance of the leagues in the season of 2013?
CREATE TABLE table_10815352_1 (
    average_attendance INTEGER,
    season VARCHAR
)
SELECT MIN(average_attendance) FROM table_10815352_1 WHERE season = "2013"
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's the average attendance of the leagues in the season of 2013? ### Input: CREATE TABLE table_10815352_1 (
    average_attendance INTEGER,
    season VARCHAR
) ### Response: SELECT MIN(average_attendance) FROM table_10815352_1 WHERE season = "2013"