41136
The natural landmarks are : Sankosh and Brahmaputra rivers on the west , the Manas river on the east in the north bank , and a corresponding region in the south bank ; the Garo Hills in the south and Bhutan Hills in the north .
 Bhutan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bhutan