Name the Years of schools with a Roll Larger than 23 and a Decile greater than 5.
CREATE TABLE "kaikoura_district" (
  "name" text,
  "years" text,
  "gender" text,
  "area" text,
  "authority" text,
  "decile" real,
  "roll" real
);
SELECT "years" FROM "kaikoura_district" WHERE "roll">23 AND "decile">5;