What is the class of the locomotive with a wheel arrangement of 4-6-0 and a quantity made of 14?
CREATE TABLE "1912_1922" (
  "class" text,
  "wheel_arrangement" text,
  "fleet_number_s" text,
  "manufacturer" text,
  "year_made" text,
  "quantity_made" text,
  "quantity_preserved" text,
  "year_s_withdrawn" text
);
SELECT "class" FROM "1912_1922" WHERE "wheel_arrangement"='4-6-0' AND "quantity_made"='14';