Please answer the following question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Paatsjoki - The Paatsjoki River (Finnish: Paatsjoki Skolt Sami: Paaccjokk Northern Sami: Bahcaveaijohka Norwegian: Pasvikelva Swedish: Pasvik alv Russian: or ) is a river that flows through Finland Norway and Russia.
A:
Natural Place