Find the last names of teachers teaching in classroom 109.
CREATE TABLE teachers (
    lastname text,
    firstname text,
    classroom number
)

CREATE TABLE list (
    lastname text,
    firstname text,
    grade number,
    classroom number
)
SELECT lastname FROM teachers WHERE classroom = 109
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: Find the last names of teachers teaching in classroom 109. ### Input: CREATE TABLE teachers (
    lastname text,
    firstname text,
    classroom number
)

CREATE TABLE list (
    lastname text,
    firstname text,
    grade number,
    classroom number
) ### Response: SELECT lastname FROM teachers WHERE classroom = 109