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He served in Congress from January 2011 through January 2013 after defeating three-term incumbent Democrat Melissa Bean by a margin of 291 votes in a surprising upset .
 organization: Democrat Melissa Bean
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: Democrat Melissa Bean 
Answer:
 organization: Democrat Melissa Bean