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Ashtamudi Lake is considered the southern gateway to the backwaters of Kerala and is a prominent tourist destination at Kollam .
 Ashtamudi Lake, Kerala, Kollam
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ashtamudi Lake, Kerala, Kollam