What is the area with decile of 8, and a 25 roll?
CREATE TABLE "westland_district" (
  "name" text,
  "years" text,
  "area" text,
  "authority" text,
  "decile" real,
  "roll" real
);
SELECT "area" FROM "westland_district" WHERE "decile"=8 AND "roll"=25;