383696
Around a dozen aviators were present , the most famous being Léon Delagrange , and Roger Sommer .
 person: Léon Delagrange; person: Roger Sommer
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: Léon Delagrange, Roger Sommer 
Answer:
 person: Léon Delagrange; person: Roger Sommer