Who wrote the episode with production code 1ANJ01?
CREATE TABLE table_18729 (
    "#" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "Production code" text,
    "U.S. viewers (millions)" text
)
SELECT "Written by" FROM table_18729 WHERE "Production code" = '1ANJ01'
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 wrote the episode with production code 1ANJ01? ### Input: CREATE TABLE table_18729 (
    "#" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "Production code" text,
    "U.S. viewers (millions)" text
) ### Response: SELECT "Written by" FROM table_18729 WHERE "Production code" = '1ANJ01'