What year was she on a 350cc class bike, ranked 16th, with over 0 wins?
CREATE TABLE "grand_prix_motorcycle_racing_results" (
  "year" real,
  "class" text,
  "team" text,
  "points" real,
  "rank" text,
  "wins" real
);
SELECT SUM("year") FROM "grand_prix_motorcycle_racing_results" WHERE "class"='350cc' AND "rank"='16th' AND "wins">0;