Which entrant had a Brabham BT10 chassis before 1965?
CREATE TABLE "complete_formula_one_world_championship_" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "tyres" text,
  "points" text
);
SELECT "entrant" FROM "complete_formula_one_world_championship_" WHERE "year"<1965 AND "chassis"='brabham bt10';