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Muenchener Rueckversicherungs AG , the world 's largest reinsurer , said on Friday it expected to switch its shares to a lower par value by September 1997 at the earliest .
 organization: Rueckversicherungs AG; else: Muenchener
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 organization: Rueckversicherungs AG; else: Muenchener