Murupara has a roll greater than 296 for what years?
CREATE TABLE "whakatane_district" (
  "name" text,
  "years" text,
  "gender" text,
  "area" text,
  "authority" text,
  "decile" real,
  "roll" real
);
SELECT "years" FROM "whakatane_district" WHERE "roll">296 AND "area"='murupara';