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Howard Laurent Boetsch ( born 1948 , Philadelphia ) is President Emeritus of the European College of Liberal Arts ( ECLA ) , Berlin , and Professor of Romance Languages at Washington and Lee University in Lexington , Virginia .
 Laurent Boetsch, Philadelphia, European College of Liberal Arts, Berlin, Washington and Lee University, Lexington , Virginia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Laurent Boetsch, Philadelphia, European College of Liberal Arts, Berlin, Washington and Lee University, Lexington , Virginia