What is the average opening at Stadyum Samsun with a capacity smaller than 34,658?
CREATE TABLE table_name_20 (
    opening INTEGER,
    stadium VARCHAR,
    capacity VARCHAR
)
SELECT AVG(opening) FROM table_name_20 WHERE stadium = "stadyum samsun" AND capacity < 34 OFFSET 658
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 opening at Stadyum Samsun with a capacity smaller than 34,658? ### Input: CREATE TABLE table_name_20 (
    opening INTEGER,
    stadium VARCHAR,
    capacity VARCHAR
) ### Response: SELECT AVG(opening) FROM table_name_20 WHERE stadium = "stadyum samsun" AND capacity < 34 OFFSET 658