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He was graduated from the Pratt Institute in 1909 and then worked as an engineer for Telefunken Wireless Telegraph Company .
 Pratt Institute, Telefunken Wireless Telegraph Company
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pratt Institute, Telefunken Wireless Telegraph Company