What series had a high points of Prince (23)?
CREATE TABLE "playoffs" (
  "game" real,
  "date" text,
  "team" text,
  "score" text,
  "high_points" text,
  "high_rebounds" text,
  "high_assists" text,
  "location_attendance" text,
  "series" text
);
SELECT "series" FROM "playoffs" WHERE "high_points"='prince (23)';