279044
Aerial service in World War I On 16 May 1917 , he was seconded to the Royal Flying Corps as a Flying Officer Observer .
 organization: Royal Flying Corps; organization: Flying
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: Royal Flying Corps, Flying 
Answer:
 organization: Royal Flying Corps; organization: Flying