Which City has a Result of w, and a Competition of international friendly (unofficial match), and a Score of 1-0?
CREATE TABLE "brazil_national_team" (
  "date" text,
  "city" text,
  "result" text,
  "score" text,
  "competition" text
);
SELECT "city" FROM "brazil_national_team" WHERE "result"='w' AND "competition"='international friendly (unofficial match)' AND "score"='1-0';