How many constructors had a grid of 13?
CREATE TABLE table_27396005_2 (
    constructor VARCHAR,
    grid VARCHAR
)
SELECT COUNT(constructor) FROM table_27396005_2 WHERE grid = 13
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: How many constructors had a grid of 13? ### Input: CREATE TABLE table_27396005_2 (
    constructor VARCHAR,
    grid VARCHAR
) ### Response: SELECT COUNT(constructor) FROM table_27396005_2 WHERE grid = 13