List the titles of books that are not published.
CREATE TABLE book (
    book_id number,
    title text,
    issues number,
    writer text
)

CREATE TABLE publication (
    publication_id number,
    book_id number,
    publisher text,
    publication_date text,
    price number
)
SELECT title FROM book WHERE NOT book_id IN (SELECT book_id FROM publication)
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: List the titles of books that are not published. ### Input: CREATE TABLE book (
    book_id number,
    title text,
    issues number,
    writer text
)

CREATE TABLE publication (
    publication_id number,
    book_id number,
    publisher text,
    publication_date text,
    price number
) ### Response: SELECT title FROM book WHERE NOT book_id IN (SELECT book_id FROM publication)