who is the opponent on 2004-06-26 with the result of loss?
CREATE TABLE "kickboxing_record" (
  "date" text,
  "result" text,
  "opponent" text,
  "event" text,
  "location" text,
  "method" text,
  "record" text
);
SELECT "opponent" FROM "kickboxing_record" WHERE "date"='2004-06-26' AND "result"='loss';