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Do Eneste To ( literally The Only Two in Danish language ) is a Danish successful duo made up of two very popular and established artists , Peter Sommer and Simon Kvamm .
 Peter Sommer, Simon Kvamm
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Peter Sommer, Simon Kvamm