It's time to reveal the winner.
The question was:
Which ballerina danced the role of Odette/Odile in the world premiere of Swan Lake, at the Bolshoi Theatre, Moscow, on 4 March 1877?
The correct answer is:
The first correct entry out of the hat is from Lucy Braga, who will receive a paperback of Odette from JDCMB and a CD of Swan Lake conducted by Vladimir Jurowski from Pentatone. Congratulations!