What Round has a Time of n/a, in rio de janeiro , brazil?
CREATE TABLE "mixed_martial_arts_record_incomplete" (
  "res" text,
  "record" text,
  "opponent" text,
  "method" text,
  "event" text,
  "round" text,
  "time" text,
  "location" text
);
SELECT "round" FROM "mixed_martial_arts_record_incomplete" WHERE "time"='n/a' AND "location"='rio de janeiro , brazil';