Which round has a win-loss result of loss and an edition of 2012 Fed Cup Europe/Africa Group I?
CREATE TABLE "doubles_8" (
  "edition" text,
  "round" text,
  "date" text,
  "partnering" text,
  "against" text,
  "surface" text,
  "opponents" text,
  "w_l" text,
  "result" text
);
SELECT "round" FROM "doubles_8" WHERE "w_l"='Loss' AND "edition"='2012 Fed Cup Europe/Africa Group I';