Question: Which driver had a grid number of 10?
SQL: SELECT "Driver" FROM "2-1123421-2" WHERE "Grid" = 10.0;

Question: Which constructor had a grid number of less than 3 and where the Time/Retired was 1:34:31.522?
SQL: SELECT "Constructor" FROM "2-1123421-2" WHERE "Grid" < 3.0 AND "Time/Retired" = '1:34:31.522';

Question: Which constructor had a Time/Retired of Collision, where the grid number was less than 18 and Nick Heidfeld was the driver?
SQL: SELECT "Constructor" FROM "2-1123421-2" WHERE "Time/Retired" = 'Collision' AND "Grid" < 18.0 AND "Driver" = 'Nick Heidfeld';