What are the highest number of points with an Entrant of warsteiner brewery?
CREATE TABLE "complete_world_championship_formula_one_" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "points" real
);
SELECT MAX("points") FROM "complete_world_championship_formula_one_" WHERE "entrant"='warsteiner brewery';