What is the production code of the episode before season 8, with a series number less than 31, and aired on September 21, 1995?
CREATE TABLE table_name_1 (
    production_code VARCHAR,
    original_air_date VARCHAR,
    season__number VARCHAR,
    series__number VARCHAR
)
SELECT production_code FROM table_name_1 WHERE season__number < 8 AND series__number < 31 AND original_air_date = "september 21, 1995"
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 production code of the episode before season 8, with a series number less than 31, and aired on September 21, 1995? ### Input: CREATE TABLE table_name_1 (
    production_code VARCHAR,
    original_air_date VARCHAR,
    season__number VARCHAR,
    series__number VARCHAR
) ### Response: SELECT production_code FROM table_name_1 WHERE season__number < 8 AND series__number < 31 AND original_air_date = "september 21, 1995"