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The Levi graph of the Pappus configuration is the Pappus graph , a bipartite distance-regular graph with 18 vertices and 27 edges .
 person: Levi; person: Pappus; person: Pappus
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: Levi, Pappus, Pappus 
Answer:
 person: Levi; person: Pappus; person: Pappus