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Other interesting members were Johan Karl von Zierotin ( 1719 – 1776 ) directeur des spectacles of Frederick II of Prussia and friend of Johann Sebastian Bach , Karel Emanuel of Zierotin ( 1850 – 1934 ) , peer of the Austrian Empire and governor of Moravia ( 1900 – 1906 ) , and Ladislav Velen of Zierotin ( 1579 – 1638 ) , head of the uprising against the Habsburgs .
 Frederick II of Prussia, Johann Sebastian Bach, Austrian Empire
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Frederick II of Prussia, Johann Sebastian Bach, Austrian Empire