What season had Kanto Gakuin University as the winner, with an attendance of n/a, and a title of 37th?
CREATE TABLE "all_japan_university_rugby_championships" (
  "title" text,
  "season" text,
  "winner" text,
  "score" text,
  "runner_up" text,
  "venue" text,
  "attendance" text
);
SELECT "season" FROM "all_japan_university_rugby_championships" WHERE "winner"='kanto gakuin university' AND "attendance"='n/a' AND "title"='37th';