What is the method in the round 2 win over Nick Gilardi?
CREATE TABLE "mixed_martial_arts_record" (
  "res" text,
  "record" text,
  "opponent" text,
  "method" text,
  "event" text,
  "round" text
);
SELECT "method" FROM "mixed_martial_arts_record" WHERE "round"='2' AND "res"='win' AND "opponent"='nick gilardi';