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He studied singing in Paris with the eminent former tenors Léon David and Léon Escalais and made his debut in Rouen as Cavaradossi in Tosca in 1931 .
 person: Léon; person: Léon Escalais; location: Rouen
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, Léon Escalais, Rouen 
Answer:
 person: Léon; person: Léon Escalais; location: Rouen