What is the average number of bronzes when the rank is below 11 for trinidad and tobago with less than 1 total medal?
CREATE TABLE "medal_table" (
  "rank" real,
  "nation" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);
SELECT AVG("bronze") FROM "medal_table" WHERE "rank"<11 AND "nation"='trinidad and tobago' AND "total"<1;