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Background and career Yohanna was raised in Hafnarfjörður , Iceland , and started performing on stage at the age of nine after participating in singing classes .
 Hafnarfjörður, Iceland
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hafnarfjörður, Iceland