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In 2000 , Marcin Rozynek met Grzegorz Ciechowski who undertook to release his first solo album .
 Marcin Rozynek, Grzegorz Ciechowski
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Marcin Rozynek, Grzegorz Ciechowski