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The Succession to Muhammad is a book written by Wilferd Madelung and released by the Cambridge University Press in 1997 .
 person: Wilferd Madelung; organization: Cambridge University Press
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: Wilferd Madelung, Cambridge University Press 
Answer:
 person: Wilferd Madelung; organization: Cambridge University Press