Definition: 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.
Input: Text:  Bzura is a river in central Poland a tributary of the Vistula river (in Wyszogród) with a length of 166 kilometres (25th longest) and the basin area of 7788 km2. It was noteworthy during the Second World War as Polish forces made a major stand against the Wehrmacht in an attempt to halt the German advance on Warsaw (Battle of the Bzura).

8