Which Width has a Number of vehicles larger than 15, and a Type designation of k5000?
CREATE TABLE "high_floor_versions" (
  "city" text,
  "operator" text,
  "type_designation" text,
  "number_of_vehicles" real,
  "width" text
);
SELECT "width" FROM "high_floor_versions" WHERE "number_of_vehicles">15 AND "type_designation"='k5000';