what is the event when the location is saitama, japan?
CREATE TABLE "kickboxing_record" (
  "date" text,
  "result" text,
  "opponent" text,
  "event" text,
  "location" text,
  "method" text,
  "record" text
);
SELECT "event" FROM "kickboxing_record" WHERE "location"='saitama, japan';