Name the number of gn divisions for mannar
CREATE TABLE table_24574438_1 (
    gn_divisions VARCHAR,
    ds_division VARCHAR
)
SELECT COUNT(gn_divisions) FROM table_24574438_1 WHERE ds_division = "Mannar"
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 gn divisions for mannar ### Input: CREATE TABLE table_24574438_1 (
    gn_divisions VARCHAR,
    ds_division VARCHAR
) ### Response: SELECT COUNT(gn_divisions) FROM table_24574438_1 WHERE ds_division = "Mannar"