CREATE TABLE "mixed_martial_arts_record" (
  "res" text,
  "record" text,
  "opponent" text,
  "method" text,
  "round" text,
  "location" text
);

Question: What round did the fight last when Mikhail Ilyukhin's record was 15-5?
SQL: SELECT "round" FROM "mixed_martial_arts_record" WHERE "record"='15-5';

Question: What method did Mikhail Ilyukhin win the fight in round 1 when his record was 13-5?
SQL: SELECT "method" FROM "mixed_martial_arts_record" WHERE "round"='1' AND "res"='win' AND "record"='13-5';

Question: What was the method of resolution when Mikhail Ilyukhin's record was 4-0?
SQL: SELECT "method" FROM "mixed_martial_arts_record" WHERE "record"='4-0';