Complex sentence: Previously a railway line existed between Dum Dum to Ultadanga for transport of wagons to Chitpur Goods Yard and some part between B.B.D. Bagh to Majerhat existed for a long time for transport of goods from port area to the godowns of the Calcutta port along the Hooghly River.
Split into simpler sentences: Previously a railway line existed between Dum Dum railway station to Ultadanga for the transport of wagons to Chitpur Goods Yard. For a considerable time, lines ran between B.B.D. Bagh and Majerhat for the transport of goods from the port area to the godowns (warehouses) of the Calcutta port along the Hooghly River.