What is the B Score when the total is more than 16.125, and position is 3rd?
CREATE TABLE "qualified_competitors" (
  "position" text,
  "gymnast" text,
  "a_score" real,
  "b_score" real,
  "total" real
);
SELECT SUM("b_score") FROM "qualified_competitors" WHERE "total">16.125 AND "position"='3rd';