Question: What is the mean number of laps where Time/retired was a water leak and the grid number was bigger than 12?
SQL: SELECT AVG("Laps") FROM "2-1123412-2" WHERE "Time/Retired" = 'water leak' AND "Grid" > 12.0;

Question: What is the mean number of laps when time/retired was Spun off and the driver was Nick Heidfeld?
SQL: SELECT AVG("Laps") FROM "2-1123412-2" WHERE "Time/Retired" = 'Spun off' AND "Driver" = 'Nick Heidfeld';

Question: What is the sum grid number when the driver was luciano burti?
SQL: SELECT COUNT("Grid") FROM "2-1123412-2" WHERE "Driver" = 'luciano burti';

Question: Which constructor had a laps number bigger than 3 when the driver was Jarno Trulli?
SQL: SELECT "Constructor" FROM "2-1123412-2" WHERE "Laps" > 3.0 AND "Driver" = 'Jarno Trulli';