what is the #/county that is ihsaa class aaa, has enrollment higher than 611 and the dragons is the mascot?
CREATE TABLE "membership" (
  "school" text,
  "location" text,
  "mascot" text,
  "enrollment" real,
  "ihsaa_class" text,
  "num_county" text,
  "year_joined" real
);
SELECT "num_county" FROM "membership" WHERE "ihsaa_class"='aaa' AND "enrollment">611 AND "mascot"='dragons';