Question: Name the entrant for Benedicto Campos
SQL: SELECT "Entrant" FROM "1-21977704-1" WHERE "Driver" = 'Benedicto Campos';

Question: Name the number for  Automóvil Club Argentino for Juan Manuel Fangio
SQL: SELECT "No" FROM "1-21977704-1" WHERE "Entrant" = 'Automóvil Club Argentino' AND "Driver" = 'Juan Manuel Fangio';

Question: Name the most number for Automóvil Club Argentino for Benedicto Campos
SQL: SELECT MAX("No") FROM "1-21977704-1" WHERE "Entrant" = 'Automóvil Club Argentino' AND "Driver" = 'Benedicto Campos';

Question: Name the driver for Talbot L6
SQL: SELECT "Driver" FROM "1-21977704-1" WHERE "Engine" = 'Talbot L6';

Question: Name the constructor for Alberto Ascari
SQL: SELECT "Constructor" FROM "1-21977704-1" WHERE "Driver" = 'Alberto Ascari';

Question: Name the chassis for Alta
SQL: SELECT "Chassis" FROM "1-21977704-1" WHERE "Constructor" = 'Alta';