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The size and placement of tone holes , key mechanism , and fingering system used to produce the notes in the flute 's range were evolved from 1832 to 1847 by Theobald Boehm and greatly improved the instrument 's dynamic range and intonation over its predecessors .
 person: Theobald Boehm
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: Theobald Boehm 
Answer:
 person: Theobald Boehm