Question: Who commissioned the 1919 ballet written by the creator of the role of the Can-Can Dancer in "La Boutique fantasque"?
Facts:
The Three-Cornered Hat was commissioned by Sergei Diaghilev
The Three-Cornered Hat premiered in 1919
The Three-Cornered Hat was choreographed by Léonide Massine
Léonide Massine created the role of the Can-Can Dancer
Can-Can Dancer was a role in La Boutique fantasque
Answer: Sergei Diaghilev