What record has magomedkhan gamzatkhanov as the opponent, and submission as the method?
CREATE TABLE "mixed_martial_arts_record" (
  "res" text,
  "record" text,
  "opponent" text,
  "method" text,
  "round" text
);
SELECT "record" FROM "mixed_martial_arts_record" WHERE "opponent"='magomedkhan gamzatkhanov' AND "method"='submission';