Which season was there a game with the score of 1:3 played at the venue of national stadium, maldives?
CREATE TABLE table_name_40 (
    season INTEGER,
    score VARCHAR,
    venue VARCHAR
)
SELECT SUM(season) FROM table_name_40 WHERE score = "1:3" AND venue = "national stadium, maldives"
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 season was there a game with the score of 1:3 played at the venue of national stadium, maldives? ### Input: CREATE TABLE table_name_40 (
    season INTEGER,
    score VARCHAR,
    venue VARCHAR
) ### Response: SELECT SUM(season) FROM table_name_40 WHERE score = "1:3" AND venue = "national stadium, maldives"