How many values of prominence(m) occur at rank 5?
CREATE TABLE "the_ten_s_ultra_prominent_summit_of_the_" (
  "rank" real,
  "peak" text,
  "country" text,
  "island" text,
  "elevation_m" real,
  "prominence_m" real,
  "col_m" real
);
SELECT COUNT("prominence_m") FROM "the_ten_s_ultra_prominent_summit_of_the_" WHERE "rank"=5;