What Average Pick # has an Overall of 296?
CREATE TABLE "indianapolis_colts_draft_history" (
  "round" real,
  "pick_num" real,
  "overall" real,
  "name" text,
  "position" text,
  "college" text
);
SELECT AVG("pick_num") FROM "indianapolis_colts_draft_history" WHERE "overall"=296;