80806
In the 10 years prior to that period , about 100 attacks per year in the Sundarbans , with a high of around 430 in some years of the 1960 s .
 Sundarbans
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sundarbans