Which district had first elected earlier than 2006 for representation of Broken Arrow, Tulsa?
CREATE TABLE "senate" (
  "district" text,
  "name" text,
  "party" text,
  "hometown" text,
  "first_elected" real,
  "towns_represented" text
);
SELECT "district" FROM "senate" WHERE "first_elected"<2006 AND "towns_represented"='broken arrow, tulsa';