Which mountain range has a rank of 19?
CREATE TABLE "the_50_most_topographically_prominent_mo" (
  "rank" real,
  "mountain_peak" text,
  "province" text,
  "mountain_range" text,
  "location" text
);
SELECT "mountain_range" FROM "the_50_most_topographically_prominent_mo" WHERE "rank"=19;