What is result of the game at Arrowhead Stadium where the loser was the Kansas City Chiefs?
CREATE TABLE "1970s_raiders_12_6_2" (
  "year" real,
  "date" text,
  "winner" text,
  "result" text,
  "loser" text,
  "location" text
);
SELECT "result" FROM "1970s_raiders_12_6_2" WHERE "location"='arrowhead stadium' AND "loser"='kansas city chiefs';