187039
Biography After his university entrance - diploma ( Abitur ) , he studied psychology , philosophy and sociology at the University of Mainz and finished his studies with a German M. A. in psychology .
 University of Mainz
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 University of Mainz