What is the Nation with 2012 as the year, and a Competition of preseason, and a Result of w 0–3?
CREATE TABLE "international_results" (
  "year" real,
  "competition" text,
  "club" text,
  "nation" text,
  "result" text
);
SELECT "nation" FROM "international_results" WHERE "year"=2012 AND "competition"='preseason' AND "result"='w 0–3';