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Son of Thakur Rawat Singh of Rora , Sadul Singh was appointed Assistant Private Secretary to Maharaja Ganga Singh of Bikaner in 1902 , Deputy Revenue and Financial Secretary in 1904 , Revenue and Financial Secretary in 1910 , Revenue Member of the Bikaner State Executive Council in 1912 , and Public Works Minister in 1917 .
 person: Singh; person: Sadul Singh; person: Maharaja Ganga Singh of Bikaner; person: Bikaner
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: Singh, Sadul Singh, Maharaja Ganga Singh of Bikaner, Bikaner 
Answer:
 person: Singh; person: Sadul Singh; person: Maharaja Ganga Singh of Bikaner; person: Bikaner