What is the Name of a state Authority that has a Roll of 72?
CREATE TABLE "south_waikato_district" (
  "name" text,
  "years" text,
  "gender" text,
  "area" text,
  "authority" text,
  "decile" real,
  "roll" text
);
SELECT "name" FROM "south_waikato_district" WHERE "authority"='state' AND "roll"='72';