what is the title when the release date is 1938-12-17 and the production number is 8610?
CREATE TABLE "1938" (
  "title" text,
  "series" text,
  "director" text,
  "production_num" text,
  "release_date" text
);
SELECT "title" FROM "1938" WHERE "release_date"='1938-12-17' AND "production_num"='8610';