Complex sentence: The nominate subspecies "Passer melanurus melanurus" is found in eastern South Africa, east to the west of Free State, and the subspecies "vicinus", which is sometimes merged with "melanurus", east from Free State to the Eastern Cape and Lesotho.
Split into simpler sentences: The nominate subspecies "Passer melanurus melanurus" is found in eastern South Africa, east to the west of Free State. The subspecies "vicinus", which is sometimes included in subspecies "melanurus", occurs from Free State east to the Eastern Cape and Lesotho.