CREATE TABLE "atlanta_falcons_draft_history" (
  "round" real,
  "pick_num" real,
  "overall" real,
  "name" text,
  "position" text,
  "college" text
);

Question: Name the least overall with pick number more than 27
SQL: SELECT MIN("overall") FROM "atlanta_falcons_draft_history" WHERE "pick_num">27;