CREATE TABLE table_name_86 (grid NUMBER, constructor VARCHAR2, driver VARCHAR2)

Tell me the sum of the grid with alfa romeo and toulo de graffenried
SELECT SUM(grid) FROM table_name_86 WHERE constructor = "alfa romeo" AND driver = "toulo de graffenried"
SELECT SUM("grid") FROM "table_name_86" WHERE "alfa romeo" = "constructor" AND "driver" = "toulo de graffenried"