Which league has a pick number larger than 204 from Canada and LW as the position?
CREATE TABLE "round_seven" (
  "pick_num" real,
  "player" text,
  "nationality" text,
  "position" text,
  "league_from" text
);
SELECT "league_from" FROM "round_seven" WHERE "pick_num">204 AND "nationality"='canada' AND "position"='lw';