Name the Team which has Points larger than 9, and a Year larger than 1971, and a Class of 250cc?
CREATE TABLE "grand_prix_motorcycle_racing_results" (
  "year" real,
  "class" text,
  "team" text,
  "points" real,
  "wins" real
);
SELECT "team" FROM "grand_prix_motorcycle_racing_results" WHERE "points">9 AND "year">1971 AND "class"='250cc';