Question: What is the grid total associated with 18 laps?
SQL: SELECT COUNT("Grid") FROM "2-12838693-3" WHERE "Laps" = 18.0;

Question: What rider is on an Aprilia that went under 18 laps with a grid total of 17?
SQL: SELECT "Rider" FROM "2-12838693-3" WHERE "Manufacturer" = 'Aprilia' AND "Laps" < 18.0 AND "Grid" = 17.0;

Question: What is the Manufacturer for Simone Corsi?
SQL: SELECT "Manufacturer" FROM "2-12838693-3" WHERE "Rider" = 'Simone Corsi';

Question: What is the grid total associated with a Time/Retired of +33.634, and a Laps smaller than 19?
SQL: SELECT MIN("Grid") FROM "2-12838693-3" WHERE "Time/Retired" = '+33.634' AND "Laps" < 19.0;