What is the Class AA with a Class AAAA of Sulphur Springs and Duncanville as the class AAAAA?
CREATE TABLE "team" (
  "school_year" text,
  "class_a" text,
  "class_aa" text,
  "class_aaa" text,
  "class_aaaa" text,
  "class_aaaaa" text
);
SELECT "class_aa" FROM "team" WHERE "class_aaaa"='sulphur springs' AND "class_aaaaa"='duncanville';