Who was the writer of episode 15?
CREATE TABLE table_25800134_4 (
    writer_s_ VARCHAR,
    season__number VARCHAR
)
SELECT writer_s_ FROM table_25800134_4 WHERE season__number = 15
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: Who was the writer of episode 15? ### Input: CREATE TABLE table_25800134_4 (
    writer_s_ VARCHAR,
    season__number VARCHAR
) ### Response: SELECT writer_s_ FROM table_25800134_4 WHERE season__number = 15