Which average Round has a Pick # larger than 20, and a College of virginia, and an Overall larger than 127?
CREATE TABLE "jacksonville_jaguars_draft_history" (
  "round" real,
  "pick_num" real,
  "overall" real,
  "name" text,
  "position" text,
  "college" text
);
SELECT AVG("round") FROM "jacksonville_jaguars_draft_history" WHERE "pick_num">20 AND "college"='virginia' AND "overall">127;