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Sears Tower — Harvard Observatory is an historic observatory that is part of Harvard Observatory and is located at 60 Garden Street in Cambridge , Massachusetts .
 organization: Harvard Observatory; organization: Harvard Observatory; location: Cambridge , Massachusetts
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: Harvard Observatory, Harvard Observatory, Cambridge , Massachusetts 
Answer:
 organization: Harvard Observatory; organization: Harvard Observatory; location: Cambridge , Massachusetts