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The investigation focuses on alleged eavesdropping against journalists and members of the supervisory executive boards of Deutsche Telekom , allegedly initiated by then chairman of the supervisory board Klaus Zumwinkel and then CEO Kai-Uwe Ricke .
 Deutsche Telekom, Klaus Zumwinkel
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Deutsche Telekom, Klaus Zumwinkel