Question: What race did Eugenio Silvani win?
SQL: SELECT "Name" FROM "2-18269311-2" WHERE "Winning driver" = 'Eugenio Silvani';

Question: Which race did Mercedes win?
SQL: SELECT "Name" FROM "2-18269311-2" WHERE "Winning constructor" = 'Mercedes';

Question: Which circuit did Alfa Romeo win?
SQL: SELECT "Circuit" FROM "2-18269311-2" WHERE "Winning constructor" = 'Alfa Romeo';