What was the host country when the silver was [[|]] (2) and bronze is czechoslovakia (3)?
CREATE TABLE "champions" (
  "year" text,
  "gold" text,
  "silver" text,
  "bronze" text,
  "host_city_cities" text,
  "host_country_countries" text
);
SELECT "host_country_countries" FROM "champions" WHERE "silver"='[[|]] (2)' AND "bronze"='czechoslovakia (3)';