Who was the opponent in the WMMA 1: McCorkle vs. Heden event that went more than 1 round?
CREATE TABLE "mixed_martial_arts_record" (
  "res" text,
  "record" text,
  "opponent" text,
  "method" text,
  "event" text,
  "round" real
);
SELECT "opponent" FROM "mixed_martial_arts_record" WHERE "round">1 AND "event"='wmma 1: mccorkle vs. heden';