What's the authority when the roll is less than 234 for the massey east area?
CREATE TABLE "henderson_massey_local_board" (
  "name" text,
  "years" text,
  "gender" text,
  "area" text,
  "authority" text,
  "decile" real,
  "roll" real
);
SELECT "authority" FROM "henderson_massey_local_board" WHERE "roll"<234 AND "area"='massey east';