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Piyali River ( ) is a tidal estuarine river in and around the Sundarbans in South 24 Parganas district in the India n state of West Bengal .
 South 24 Parganas district, India, West Bengal
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 South 24 Parganas district, India, West Bengal