Question: What was the fastest lap for Grand Prix Dutch TT?
SQL: SELECT "Fastest Lap" FROM "2-18303274-1" WHERE "Grand Prix" = 'Dutch TT';

Question: Who won the race circuit of Sachsenring?
SQL: SELECT "Race Winner" FROM "2-18303274-1" WHERE "Circuit" = 'Sachsenring';

Question: Who won with the fastest lap of Daijiro Hiura on March 29?
SQL: SELECT "Race Winner" FROM "2-18303274-1" WHERE "Fastest Lap" = 'Daijiro Hiura' AND "Date" = 'March 29';