What method did Mikhail Ilyukhin win the fight in round 1 when his record was 13-5?
CREATE TABLE "mixed_martial_arts_record" (
  "res" text,
  "record" text,
  "opponent" text,
  "method" text,
  "round" text,
  "location" text
);
SELECT "method" FROM "mixed_martial_arts_record" WHERE "round"='1' AND "res"='win' AND "record"='13-5';