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