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De Peyster Douw Brown DFC ( 1915 – 1991 ) was an American fighter pilot who volunteered to fly for the British Royal Air Force in World War II .
 person: De Peyster; person: Brown; organization: Royal Air Force
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: De Peyster, Brown, Royal Air Force 
Answer:
 person: De Peyster; person: Brown; organization: Royal Air Force