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working for a short period under Swedish-American inventor John Ericsson , who designed the American Civil War ironclad " USS Monitor " .
 person: John Ericsson
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: John Ericsson 
Answer:
 person: John Ericsson