Which player was drafted overall from the college of Nebraska in a round under 6, pick of 15, and overall under 224?
CREATE TABLE "washington_redskins_draft_history" (
  "round" real,
  "pick" real,
  "overall" real,
  "name" text,
  "position" text,
  "college" text
);
SELECT "name" FROM "washington_redskins_draft_history" WHERE "overall"<224 AND "round"<6 AND "pick"=15 AND "college"='nebraska';