191142
She obtained a PhD in private law at the Paris-Sorbonne University in 1991 , and became an Assistant professor at the University of Ouagadougou .
 Paris-Sorbonne University, University of Ouagadougou
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Paris-Sorbonne University, University of Ouagadougou