In this task, you are given a text which is the body of a document. Your job is to classify the topic of the document into these categories: 1)Company, 2)Educational Institution, 3)Artist, 4)Athlete, 5)Office Holder, 6)Mean of transportation, 7)Building, 8)Natural place, 9)Village, 10)Animal, 11)Plant, 12)Album, 13)Film, 14)Written work. Your output should be the category number. Don't generate anything apart from numbers 1-14.

Text: The Rio Cobre is a river of Jamaica. Its source is unclear on the best map available the headwaters being a writhing of unnamed seasonally dry tributaries. The highest of these rise just above the 1750 feet (530 m) contour. From here it flows to meet the Caribbean Sea in the north west corner of Kingston Harbour. It is dammed by the Rio Cobre Dam just above Spanish Town.The river's most significant feature is perhaps the gorge through which it runs between Bog Walk and northern Spanish Town.
8