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However , he was unsuccessful in this task , as Low Thia Khiang and Chiam See Tong retained their respective wards .
 person: Low Thia Khiang; person: Chiam See Tong
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: Low Thia Khiang, Chiam See Tong 
Answer:
 person: Low Thia Khiang; person: Chiam See Tong