Question: How many grids had a Time/Retired of +4 laps?
SQL: SELECT COUNT("Grid") FROM "2-1688155-2" WHERE "Time/Retired" = '+4 laps';

Question: How many laps had a constructor of toyota and a Time/Retired of +13.409?
SQL: SELECT COUNT("Laps") FROM "2-1688155-2" WHERE "Constructor" = 'toyota' AND "Time/Retired" = '+13.409';

Question: What was the constructor when the laps were larger than 54, and the time/retired was +1 Lap on a grid of 20?
SQL: SELECT "Constructor" FROM "2-1688155-2" WHERE "Laps" > 54.0 AND "Time/Retired" = '+1 Lap' AND "Grid" = 20.0;

Question: How many grids had a constructor of renault and less than 4 laps?
SQL: SELECT SUM("Grid") FROM "2-1688155-2" WHERE "Constructor" = 'renault' AND "Laps" < 4.0;