223006
Built as part of Chester 's defensive system , it was used in the 19th and early 20th centuries as a museum .
 location: Chester
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: Chester 
Answer:
 location: Chester