What is the title of the episode that aired on 13 august 1981?
CREATE TABLE table_2570269_3 (
    episode_title VARCHAR,
    original_air_date__uk_ VARCHAR
)
SELECT episode_title FROM table_2570269_3 WHERE original_air_date__uk_ = "13 August 1981"
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 title of the episode that aired on 13 august 1981? ### Input: CREATE TABLE table_2570269_3 (
    episode_title VARCHAR,
    original_air_date__uk_ VARCHAR
) ### Response: SELECT episode_title FROM table_2570269_3 WHERE original_air_date__uk_ = "13 August 1981"