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Principal contributors to the development of a theoretical treatment of ionic crystal structures were Max Born , Fritz Haber , Alfred Landé , Erwin Madelung , Paul Peter Ewald , and Kazimierz Fajans .
 person: Max Born; person: Fritz Haber; person: Alfred Landé; person: Erwin Madelung; person: Paul Peter Ewald; person: Kazimierz Fajans
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Max Born, Fritz Haber, Alfred Landé, Erwin Madelung, Paul Peter Ewald, Kazimierz Fajans 
Answer:
 person: Max Born; person: Fritz Haber; person: Alfred Landé; person: Erwin Madelung; person: Paul Peter Ewald; person: Kazimierz Fajans