Which County has an IHSAA Class of aaaa, and a Mascot of cardinals?
CREATE TABLE "schools" (
  "school" text,
  "city" text,
  "mascot" text,
  "enrollment" real,
  "ihsaa_class" text,
  "county" text
);
SELECT "county" FROM "schools" WHERE "ihsaa_class"='aaaa' AND "mascot"='cardinals';