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Most structures and works are still standing , such as the country 's largest intact parks system designed by Frederick Law Olmsted and Calvert Vaux .
 person: Frederick Law Olmsted; person: Calvert Vaux
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: Frederick Law Olmsted, Calvert Vaux 
Answer:
 person: Frederick Law Olmsted; person: Calvert Vaux