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He was , for a time , a lecturer in politics at the Lüneburg University , and in 1988 he became a research fellow at Hamburg ’s Foundation for 20th-century Social History .
 Lüneburg University, Hamburg
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Lüneburg University, Hamburg