Name the Pick # which has a Position of lb, and a CFL Team of winnipeg?
CREATE TABLE "round_four" (
  "pick_num" real,
  "cfl_team" text,
  "player" text,
  "position" text,
  "college" text
);
SELECT SUM("pick_num") FROM "round_four" WHERE "position"='lb' AND "cfl_team"='winnipeg';