What is Event, when Round is "1", when Location is "Osaka , Japan", and when Method is "TKO (corner stoppage)"?
CREATE TABLE "mixed_martial_arts_record" (
  "res" text,
  "record" text,
  "opponent" text,
  "method" text,
  "event" text,
  "round" text,
  "location" text
);
SELECT "event" FROM "mixed_martial_arts_record" WHERE "round"='1' AND "location"='osaka , japan' AND "method"='tko (corner stoppage)';