Question: What is the second profession of the Mexican ballerina best known for the Tchaikovsky ballet that initially failed?
Sentence (from "Sandra Madgwick"): She initially trained at the Royal Ballet School and took over extensive roles both at the Birmingham Royal Ballet and at the Royal Opera House, Covent Garden appearing in works such as The Nutcracker, The Two Pigeons, Coppélia, Les Patineurs, and Carmina Burana.
Relevant evidence: No