What is the total number of bronze medals the U.S. Virgin Islands, which has less than 0 golds, has?
CREATE TABLE "medal_table" (
  "rank" real,
  "nation" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);
SELECT COUNT("bronze") FROM "medal_table" WHERE "nation"='u.s. virgin islands' AND "gold"<0;