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He hosted the Eurovision Song Contest 2003 in Riga , Latvia , with co-host Marija Naumova ( stage name Marie N ) , and also hosted Congratulations , the Eurovision 50th anniversary concert in Copenhagen , Denmark , with Katrina Leskanich .
 Riga, Latvia, Marie N, Copenhagen, Denmark, Katrina Leskanich
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Riga, Latvia, Marie N, Copenhagen, Denmark, Katrina Leskanich