What was the sum roll of Karaka area?
CREATE TABLE "papakura_local_board" (
  "name" text,
  "years" text,
  "gender" text,
  "area" text,
  "authority" text,
  "decile" real,
  "roll" real
);
SELECT SUM("roll") FROM "papakura_local_board" WHERE "area"='karaka';