How many points did she have with team bultaco, ranked 6th?
CREATE TABLE "grand_prix_motorcycle_racing_results" (
  "year" real,
  "class" text,
  "team" text,
  "points" real,
  "rank" text,
  "wins" real
);
SELECT SUM("points") FROM "grand_prix_motorcycle_racing_results" WHERE "team"='bultaco' AND "rank"='6th';