Question: How many times is the series Italian and the circuit is Valencia?
SQL: SELECT COUNT("Round") FROM "1-26920192-5" WHERE "Series" = 'Italian' AND "Circuit" = 'Valencia';

Question: Who had the fastest lap for the circuit Magione?
SQL: SELECT "Fastest Lap" FROM "1-26920192-5" WHERE "Circuit" = 'Magione';

Question: Who had the fastest lap when the winning driver is Giorgio Sanna?
SQL: SELECT "Fastest Lap" FROM "1-26920192-5" WHERE "Winning Driver" = 'Giorgio Sanna';

Question: Who had the fastest lap when the winning driver was Kristian Ghedina?
SQL: SELECT "Fastest Lap" FROM "1-26920192-5" WHERE "Winning Driver" = 'Kristian Ghedina';