what is the least maglia rosa when the rank is 108=, the country is united kingdom and young rider is less than 0?
CREATE TABLE "individual_records" (
  "rank" text,
  "name" text,
  "country" text,
  "maglia_rosa" real,
  "giro_wins" real,
  "points" real,
  "young_rider" real
);
SELECT MIN("maglia_rosa") FROM "individual_records" WHERE "rank"='108=' AND "country"='united kingdom' AND "young_rider"<0;