Name the number of complement for 4th hanoverian brigade
CREATE TABLE table_11793221_4 (
    complement VARCHAR,
    unit VARCHAR
)
SELECT COUNT(complement) FROM table_11793221_4 WHERE unit = "4th Hanoverian Brigade"
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: Name the number of complement for 4th hanoverian brigade ### Input: CREATE TABLE table_11793221_4 (
    complement VARCHAR,
    unit VARCHAR
) ### Response: SELECT COUNT(complement) FROM table_11793221_4 WHERE unit = "4th Hanoverian Brigade"