Answer the following question: The Baro River (known to the Anuak as Upeno River) is a river in southwestern Ethiopia which defines part of Ethiopia's border with South Sudan. From its source in the Ethiopian Highlands it flows west for 306 kilometres (190 mi) to join the Pibor River. The Baro-Pibor confluence marks the beginning of the Sobat River a tributary of the White Nile.The Baro and its tributaries drain a watershed 41400 km2 (16000 sq mi) in size. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Answer:
Natural Place