Question: What American ballet dancer and principal dancer with the American Ballet Theatre, also starred as a "dance double" for Natalie Portman in the 2010 movie Black Swan?
Sentence (from "Black Swan dance double controversy"): After the 83rd Academy Awards, in which Portman won the Oscar for Best Actress for her role in the film as a ballerina, controversy arose over how much credit for the dancing in the film was being given to her and how much to her "dance double", American Ballet Theatre soloist Sarah Lane.
Relevant evidence: Yes