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The Sidney H. Horner House was built in 1881 by Michael Brennam , an early builder/architect , approximately six blocks to the west of the Mississippi River in Helena , Arkansas .
 organization: Mississippi; location: Helena , Arkansas
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: Mississippi, Helena , Arkansas 
Answer:
 organization: Mississippi; location: Helena , Arkansas