What was the result for a partnering of Frederica Piedade?
CREATE TABLE "doubles_8" (
  "edition" text,
  "round" text,
  "date" text,
  "partnering" text,
  "against" text,
  "surface" text,
  "opponents" text,
  "w_l" text,
  "result" text
);
SELECT "result" FROM "doubles_8" WHERE "partnering"='Frederica Piedade';