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However , William Vennard points out that while most untrained people can sound comparatively " breathy " or " hooty " when using falsetto production , there are in rarer cases individuals who have developed a much stronger falsetto sound production which has more " ring " to it .
 person: William Vennard
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: William Vennard 
Answer:
 person: William Vennard