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Another son of the city is one of Sweden 's most popular singers , Håkan Hellström , who often includes many places from the city in his songs .
 Sweden, Håkan Hellström
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sweden, Håkan Hellström