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The music score by Mario Nascimbene , which was conducted by Franco Ferrara , the noted conductor and lecturer on conducting at several famous international academies , was noted for its unusual , stark experimental component " & ndash ; the composer referred to his work , which included the introduction of electronic sounds achieved by the manipulation of tape speeds , as " new sounds " .
 person: Mario Nascimbene; person: Franco Ferrara
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: Mario Nascimbene, Franco Ferrara 
Answer:
 person: Mario Nascimbene; person: Franco Ferrara