What is the result of the sajc king's cup race, which has a weight heavier than 8.1?
CREATE TABLE "1929_30_season_as_a_three_year_old" (
  "result" text,
  "race" text,
  "distance" text,
  "weight" real,
  "winner_or_2nd" text,
  "pos_n" text
);
SELECT "result" FROM "1929_30_season_as_a_three_year_old" WHERE "weight">8.1 AND "race"='sajc king''s cup';