What is the numbers of the thn unit with a power greater than 220?
CREATE TABLE "diesel_multiple_units" (
  "type" text,
  "numbers" text,
  "year_built" real,
  "quantity_built" text,
  "power_horsepower" real,
  "max_speed_km_h" real
);
SELECT "numbers" FROM "diesel_multiple_units" WHERE "power_horsepower">220 AND "type"='thn';