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" , written by Paavo Haavikko and composed by Tuomas Kantelinen , debuted at the Helsinki Olympic Stadium in 2000 .
 Paavo Haavikko, Tuomas Kantelinen, Helsinki Olympic Stadium
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Paavo Haavikko, Tuomas Kantelinen, Helsinki Olympic Stadium