What is the average number of tries that has a start larger than 32, is a player of seremaia bai that also has a conversion score larger than 47?
CREATE TABLE "most_points" (
  "player" text,
  "span" text,
  "start" real,
  "tries" real,
  "conv" real,
  "pens" real,
  "drop" real
);
SELECT AVG("tries") FROM "most_points" WHERE "start">32 AND "player"='seremaia bai' AND "conv">47;