What is the round at St. Mirren Park with more than 4,555 people attending?
CREATE TABLE "scottish_cup" (
  "date" text,
  "round" text,
  "opponent" text,
  "venue" text,
  "result" text,
  "attendance" real
);
SELECT "round" FROM "scottish_cup" WHERE "venue"='st. mirren park' AND "attendance">'4,555';