What was the Women's doubles that has a Men's singles of fernando silva, and in the year 1996?
CREATE TABLE "past_winners" (
  "year" real,
  "men_s_singles" text,
  "women_s_singles" text,
  "men_s_doubles" text,
  "women_s_doubles" text,
  "mixed_doubles" text
);
SELECT "women_s_doubles" FROM "past_winners" WHERE "men_s_singles"='fernando silva' AND "year"<1996;