138566
The two neighborhoods , combined into one historic district in 1986 , reflect the history of suburban design from 1885 when the phenomenon first took hold in Westchester , the first large suburban area in the world to develop , to the 1920s when the automobile and Progressive Era ideas of planning and architecture were coming into favor .
 location: Westchester
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: Westchester 
Answer:
 location: Westchester