Question: What is the name of the circuit in which the race name is II Danish Grand Prix?
SQL: SELECT "Circuit" FROM "1-1140105-6" WHERE "Race Name" = 'II Danish Grand Prix';

Question: What is te name of the constructors dated 26 March?
SQL: SELECT "Constructor" FROM "1-1140105-6" WHERE "Date" = '26 March';

Question: What is the total amount of circuts dated 22 April?
SQL: SELECT COUNT("Circuit") FROM "1-1140105-6" WHERE "Date" = '22 April';

Question: what is the name of the constructor that has the circuit Zeltweg Airfield?
SQL: SELECT "Constructor" FROM "1-1140105-6" WHERE "Circuit" = 'Zeltweg Airfield';

Question: What is the name of the winning driver where the circuit name is Posillipo?
SQL: SELECT "Winning driver" FROM "1-1140105-6" WHERE "Circuit" = 'Posillipo';

Question: What is the name of the circuit where the race XI Syracuse Grand Prix was held?
SQL: SELECT "Circuit" FROM "1-1140105-6" WHERE "Race Name" = 'XI Syracuse Grand Prix';