What is the average year founded that is located in Broken Hill and has school years of k-6?
CREATE TABLE table_name_31 (
    founded INTEGER,
    years VARCHAR,
    suburb_town VARCHAR
)
SELECT AVG(founded) FROM table_name_31 WHERE years = "k-6" AND suburb_town = "broken hill"
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 founded that is located in Broken Hill and has school years of k-6? ### Input: CREATE TABLE table_name_31 (
    founded INTEGER,
    years VARCHAR,
    suburb_town VARCHAR
) ### Response: SELECT AVG(founded) FROM table_name_31 WHERE years = "k-6" AND suburb_town = "broken hill"