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Education and early career Kravchenko studied at Simon Holosy 's art school in Munich ( 1903 ) and the Moscow School of Painting , Sculpture and Architecture ( 1904 – 5 and 1907 – 10 ) under Sergey Ivanov , Abram Arkhipov , Konstantin Korovin and Valentin Serov , graduating with distinction in 1910 .
 Kravchenko, Munich, Moscow School of Painting , Sculpture and Architecture, Sergey Ivanov, Abram Arkhipov, Konstantin Korovin, Valentin Serov
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Kravchenko, Munich, Moscow School of Painting , Sculpture and Architecture, Sergey Ivanov, Abram Arkhipov, Konstantin Korovin, Valentin Serov