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Teaching and research He is presently Director of the Nehru Memorial Museum and Library , while on long-leave from his position as Professor of history at Delhi University .
 organization: Delhi University
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Delhi University 
Answer:
 organization: Delhi University