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France Ačko ( b. July 23 , 1904 in Maribor – d. December 30 , 1974 in Ljubljana ) was a Slovenia n musician , organist and composer of sacred music .
 Ačko, Maribor, Ljubljana, Slovenia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ačko, Maribor, Ljubljana, Slovenia