what is the mountain range when the region is british columbia and mountain pea is mount edziza?
CREATE TABLE "the_200_most_topographically_prominent_m" (
  "rank" real,
  "mountain_peak" text,
  "region" text,
  "mountain_range" text,
  "location" text
);
SELECT "mountain_range" FROM "the_200_most_topographically_prominent_m" WHERE "region"='british columbia' AND "mountain_peak"='mount edziza';