What's the average Women's Wheelchair when Men's race is 0, Women's race is 1, and Men's wheelchair is less than 2?
CREATE TABLE "victories_by_nationality" (
  "country" text,
  "men_s_race" real,
  "women_s_race" real,
  "men_s_wheelchair" real,
  "women_s_wheelchair" real,
  "total" real
);
SELECT AVG("women_s_wheelchair") FROM "victories_by_nationality" WHERE "men_s_race"=0 AND "women_s_race"=1 AND "men_s_wheelchair"<2;