What is the average overall value for a round less than 4 associated with the College of Georgia?
CREATE TABLE "1998_new_england_patriots_draft_selectio" (
  "round" real,
  "overall" real,
  "player" text,
  "position" text,
  "college" text
);
SELECT AVG("overall") FROM "1998_new_england_patriots_draft_selectio" WHERE "round"<4 AND "college"='georgia';