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F.K. 5 Armstrong Whitworth 's chief designer , Frederick Koolhoven 's first design to meet this requirement , probably designated F.K. 5 , was a large , single-engined tractor triplane with the middle wing having a much greater span than the upper and lower wings .
 person: Frederick Koolhoven
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: Frederick Koolhoven 
Answer:
 person: Frederick Koolhoven