What is the grid for dirk heidolf?
CREATE TABLE table_name_25 (
    grid INTEGER,
    rider VARCHAR
)
SELECT SUM(grid) FROM table_name_25 WHERE rider = "dirk heidolf"
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: What is the grid for dirk heidolf? ### Input: CREATE TABLE table_name_25 (
    grid INTEGER,
    rider VARCHAR
) ### Response: SELECT SUM(grid) FROM table_name_25 WHERE rider = "dirk heidolf"