What is the earliest year with a result of nominated, and a nominee(s) of john wells, for an episode of "makemba"?
CREATE TABLE "humanitas_prize" (
  "year" real,
  "category" text,
  "nominee_s" text,
  "episode" text,
  "result" text
);
SELECT MIN("year") FROM "humanitas_prize" WHERE "result"='nominated' AND "nominee_s"='john wells' AND "episode"='\"makemba\"';