Tell me the round of 32 for conference of southland
CREATE TABLE "record_by_conference" (
  "conference" text,
  "num_of_bids" real,
  "record" text,
  "win_pct" text,
  "round_of_32" text,
  "sweet_sixteen" text,
  "elite_eight" text,
  "final_four" text,
  "championship_game" text
);
SELECT "round_of_32" FROM "record_by_conference" WHERE "conference"='southland';