Question: What kind of Winning driver has a Winning constructor of Mercer?
SQL: SELECT "Winning driver" FROM "2-18256407-2" WHERE "Winning constructor" = 'Mercer';

Question: Which Winning driver has a Winning constructor of Mercedes, and a Name of Elgin Trophy?
SQL: SELECT "Winning driver" FROM "2-18256407-2" WHERE "Winning constructor" = 'Mercedes' AND "Name" = 'Elgin Trophy';

Question: Name the Report of Tourist Trophy?
SQL: SELECT "Report" FROM "2-18256407-2" WHERE "Name" = 'Tourist Trophy';

Question: Name the Winning constructor on 31 May and a Circuit of Madonie?
SQL: SELECT "Winning constructor" FROM "2-18256407-2" WHERE "Date" = '31 May' AND "Circuit" = 'Madonie';

Question: Name the Date of Mercedes, and a Circuit of Elgin?
SQL: SELECT "Date" FROM "2-18256407-2" WHERE "Winning constructor" = 'Mercedes' AND "Circuit" = 'Elgin';

Question: Name the Winning driver of Mercedes on 22 August?
SQL: SELECT "Winning driver" FROM "2-18256407-2" WHERE "Winning constructor" = 'Mercedes' AND "Date" = '22 August';