Question: What is the middle name of the actress who portrayed the main character in the film based on the first full-length biography of Ayn Rand? 
Sentence (from "Helen Mirren"): Mirren began her acting career with the Royal Shakespeare Company in 1967, and is one of the few performers who have achieved the Triple Crown of Acting, having won the Academy Award for Best Actress in 2007, after two previous nominations, for her performance as Queen Elizabeth II in "The Queen".
Relevant evidence: No