What time for the entrant weighing 54.4kg?
CREATE TABLE "career_results" (
  "result" text,
  "date" text,
  "race" text,
  "venue" text,
  "distance" text,
  "class" text,
  "weight_kg" text,
  "time" text,
  "jockey" text,
  "odds" text,
  "winner_2nd" text
);
SELECT "time" FROM "career_results" WHERE "weight_kg"='54.4kg';