what's the party with candidates being silvio conte (r) unopposed
CREATE TABLE "table1_1341604_22" (
  "district" text,
  "incumbent" text,
  "party" text,
  "first_elected" real,
  "result" text,
  "candidates" text
);
SELECT "party" FROM "table1_1341604_22" WHERE "candidates"='Silvio Conte (R) Unopposed';