Which location includes Coast Mountains with a rank less than 18 at Skihist Mountain?
CREATE TABLE "the_50_most_topographically_prominent_mo" (
  "rank" real,
  "mountain_peak" text,
  "province" text,
  "mountain_range" text,
  "location" text
);
SELECT "location" FROM "the_50_most_topographically_prominent_mo" WHERE "mountain_range"='coast mountains' AND "rank"<18 AND "mountain_peak"='skihist mountain';