70139
They have introduced over 250 works of contemporary classical music , including Iannis Xenakis ' Pléïades and Karlheinz Stockhausen 's Musik im Bauch .
 Iannis Xenakis, Karlheinz Stockhausen 's
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Iannis Xenakis, Karlheinz Stockhausen 's