What is the product code for the episode titled "Kafelnikov"?
CREATE TABLE "table1_234886_3" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "prod_code" text
);
SELECT "prod_code" FROM "table1_234886_3" WHERE "title"='\"Kafelnikov\"';