What is the race with a 10f distance and mollison as the winner or 2nd?
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 "race" FROM "1929_30_season_as_a_three_year_old" WHERE "distance"='10f' AND "winner_or_2nd"='mollison';