WHAT IS THE NAME OF THE MENS DOUBLES PLAYER WHEN THE WOMENS DOUBLES PLAYER IS HELEN REINO KAI-RIIN SALUSTE?
CREATE TABLE "past_winners" (
  "year" real,
  "mens_singles" text,
  "womens_singles" text,
  "mens_doubles" text,
  "womens_doubles" text,
  "mixed_doubles" text
);
SELECT "mens_doubles" FROM "past_winners" WHERE "womens_doubles"='Helen Reino Kai-Riin Saluste';