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Their son , William L. Webster served as Missouri Attorney General .
 person: William L. Webster; location: Missouri
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: William L. Webster, Missouri 
Answer:
 person: William L. Webster; location: Missouri