205947
The Merchants Exchange building ( 1842-1890 ) in Boston , Massachusetts was built in 1841 from a design by architect Isaiah Rogers .
 location: Boston; location: Massachusetts; person: Isaiah Rogers
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: Boston, Massachusetts, Isaiah Rogers 
Answer:
 location: Boston; location: Massachusetts; person: Isaiah Rogers