What's the name of the competition where the nationality is Brazil and the voting percentage is n/a?
CREATE TABLE "2010" (
  "rank" text,
  "player" text,
  "nationality" text,
  "team" text,
  "opponent" text,
  "score" text,
  "competition" text,
  "vote_percentage" text
);
SELECT "competition" FROM "2010" WHERE "vote_percentage"='N/A' AND "nationality"='Brazil';