Which round has a Venue of nicosia, and a Opponent of levski sofia zapad?
CREATE TABLE "uefa_club_competitions_record" (
  "season" text,
  "competition" text,
  "round" text,
  "opponent" text,
  "result" text,
  "venue" text
);
SELECT "round" FROM "uefa_club_competitions_record" WHERE "venue"='nicosia' AND "opponent"='levski sofia zapad';