Who was the Class AA winner when Plains was Class A winner and Lubbock was Class AAAAA winner?
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_a"='Plains' AND "class_aaaaa"='Lubbock';