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Over a period of 20 years in public service he has been on the San Mateo City Council , where he served one term as Mayor , and the San Mateo County Board of Supervisors .
 organization: Mateo; location: San Mateo County
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: Mateo, San Mateo County 
Answer:
 organization: Mateo; location: San Mateo County