What is the order number where the song choice is "l'appuntamento"?
CREATE TABLE "table1_25374338_1" (
  "episode" text,
  "theme" text,
  "song_choice" text,
  "original_artist" text,
  "order_num" text,
  "result" text
);
SELECT "order_num" FROM "table1_25374338_1" WHERE "song_choice"='\"L''appuntamento\"';