Which Round is the average one that has a Pick # larger than 26, and a Position of defensive back?
CREATE TABLE table_name_52 (
    round INTEGER,
    pick__number VARCHAR,
    position VARCHAR
)
SELECT AVG(round) FROM table_name_52 WHERE pick__number > 26 AND position = "defensive back"
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 is the average one that has a Pick # larger than 26, and a Position of defensive back? ### Input: CREATE TABLE table_name_52 (
    round INTEGER,
    pick__number VARCHAR,
    position VARCHAR
) ### Response: SELECT AVG(round) FROM table_name_52 WHERE pick__number > 26 AND position = "defensive back"