Which Fuel Propulsion has a Fleet Series (Quantity) of 04001-04125 (125)?
CREATE TABLE "current_fleet_roster" (
  "builder" text,
  "model" text,
  "length_ft_m" text,
  "order_year" text,
  "fuel_propulsion" text,
  "fleet_series_quantity" text
);
SELECT "fuel_propulsion" FROM "current_fleet_roster" WHERE "fleet_series_quantity"='04001-04125 (125)';