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Zhou Chi 's grandfather Zhou Pei ( 周沛 ) served as an advisory official in the Tang imperial government , while his father Zhou Ting ( 周頲 ) served as an imperial guard officer .
 person: Zhou Chi; person: Zhou; person: Zhou
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: Zhou Chi, Zhou, Zhou 
Answer:
 person: Zhou Chi; person: Zhou; person: Zhou