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Old Park ( Paḻaiya Pūṅkā ) is a 27 acre urban park in the city of Jaffna in northern Sri Lanka .
 Jaffna, Sri Lanka
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Jaffna, Sri Lanka