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Finally in 1964 – 65 , Walter Kohn , Pierre Hohenberg and Lu Jeu Sham proposed the density functional theory which gave realistic descriptions for bulk and surface properties of metals .
 person: Walter Kohn; person: Pierre Hohenberg; person: Lu Jeu Sham
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: Walter Kohn, Pierre Hohenberg, Lu Jeu Sham 
Answer:
 person: Walter Kohn; person: Pierre Hohenberg; person: Lu Jeu Sham