What is the Date, when Partnering is "Francesca Lubiani", and when Opponent in Final is "Yuliya Beygelzimer / Jennifer Hopkins"?
CREATE TABLE "doubles_finals_36_18_18" (
  "outcome" text,
  "date" text,
  "location" text,
  "surface" text,
  "partnering" text,
  "opponent_in_final" text,
  "score" text
);
SELECT "date" FROM "doubles_finals_36_18_18" WHERE "partnering"='francesca lubiani' AND "opponent_in_final"='yuliya beygelzimer / jennifer hopkins';