What place was the horse with a barrier of 20 and weighing less than 54 kg
CREATE TABLE "race_starters" (
  "saddle_cloth" real,
  "horse" text,
  "trainer" text,
  "jockey" text,
  "weight_kg" real,
  "barrier_b" text,
  "placing" text
);
SELECT "placing" FROM "race_starters" WHERE "weight_kg"<54 AND "barrier_b"='20';