CREATE TABLE table_26826304_1 (written_by VARCHAR2, production_code VARCHAR2)

Who was the writer of the episode with a production code of 5aky04?
SELECT written_by FROM table_26826304_1 WHERE production_code = "5AKY04"
SELECT "written_by" FROM "table_26826304_1" WHERE "5AKY04" = "production_code"