Which Pick has a Round larger than 1, a School/Club Team of alcorn state, and a Position of defensive back?
CREATE TABLE "nfl_draft" (
  "round" real,
  "pick" real,
  "player" text,
  "position" text,
  "school_club_team" text
);
SELECT SUM("pick") FROM "nfl_draft" WHERE "round">1 AND "school_club_team"='alcorn state' AND "position"='defensive back';