Task: Text Categorization
Input (English): Context: The Bârzava (Romanian: Bârzava Serbian: Brzava or Брзава) is a river in Romania and Serbia. The Bârzava is 166 km long has a drainage area of 1190 km² (part of the Black Sea drainage basin) and flows into the Tamiš river.
Question: The document can be classified to which topic? 
Options: 1)Album, 2)NaturalPlace, 3)Artist, 4)EducationalInstitution, 5)Athlete
Output (English): 2