The Trebbia (stressed Trèbbia; Latin: Trebia) is a river predominantly of Liguria and Emilia Romagna in northern Italy. It is one of the four main right-bank tributaries of the river Po the other three being the Tanaro the Secchia and the Panaro. The 1150 km2 (440 sq mi) drainage basin is divided between Emilia Romagna (770 km² 300 mi²) Liguria (349 km² 135 mi²) and Lombardy (31 km² 12 mi²). 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