What round did the event UFC 86 take place?
CREATE TABLE "mixed_martial_arts_record" (
  "res" text,
  "record" text,
  "opponent" text,
  "method" text,
  "event" text,
  "round" text,
  "location" text
);
SELECT "round" FROM "mixed_martial_arts_record" WHERE "event"='ufc 86';