Question: Which round 5 Grand Prix had Daijiro Hiura at pole position? 
SQL: SELECT "Grand Prix" FROM "1-18303274-1" WHERE "Pole Position" = 'Daijiro Hiura' AND "Round" = 5.0;

Question: What grand prixs did Daijiro Hiura win? 
SQL: SELECT "Grand Prix" FROM "1-18303274-1" WHERE "Race Winner" = 'Daijiro Hiura';

Question: Who had the fastest lap in the Dutch TT Grand Prix? 
SQL: SELECT "Fastest Lap" FROM "1-18303274-1" WHERE "Grand Prix" = 'Dutch TT';

Question: Luis Salom had the fastest lap on which circuits? 
SQL: SELECT "Circuit" FROM "1-18303274-1" WHERE "Fastest Lap" = 'Luis Salom';