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In the 5th century AD , Zu Gengzhi , son of Zu Chongzhi , established a method that would later be called Cavalieri 's principle to find the volume of a sphere .
 person: Zu Gengzhi; person: Zu Chongzhi; person: Cavalieri
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: Zu Gengzhi, Zu Chongzhi, Cavalieri 
Answer:
 person: Zu Gengzhi; person: Zu Chongzhi; person: Cavalieri