Question: The Grana del Monferrato (to distinguish it from the Grana of the Province of Cuneo) is a small Italian river classified as a torrente a right tributary of the Po which runs almost entirely in the Province of Alessandria among the hills of the Basso Monferrato which lie between the Po to the north and the Tanaro to the south. 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