What round was at the A venue with a attendance more than 14,314?
CREATE TABLE "scottish_cup" (
  "date" text,
  "round" text,
  "opponent" text,
  "venue" text,
  "result" text,
  "attendance" real,
  "scorers" text
);
SELECT "round" FROM "scottish_cup" WHERE "venue"='a' AND "attendance">'14,314';