Question: The ballet whose act François Alu danced as a free variation at his first promotion competition was first presented in what city?
Sentence (from "La Bayadère"): "La Bayadère" was first presented by the Imperial Ballet at the Imperial Bolshoi Kamenny Theatre in St. Petersburg, Russia, on 4 February [O.S. 23 January] 1877 .
Relevant evidence: Yes