Which entrant, with an Offenhauser L4 engine and a Kurtis Kraft KK500A chassis, scored 9 points before 1955?
CREATE TABLE "complete_formula_one_world_championship_" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "points" real
);
SELECT "entrant" FROM "complete_formula_one_world_championship_" WHERE "engine"='offenhauser l4' AND "year"<1955 AND "chassis"='kurtis kraft kk500a' AND "points"=9;