Question: Which movie starring Oprah Winfrey is based on a novel by a freelance science writer? 
Sentence (from "Rebecca Skloot"): Her first book, "The Immortal Life of Henrietta Lacks" (2010), was one of the best-selling new books of 2010, staying on "The New York Times" Bestseller list for over 2 years and eventually reaching #1.
Relevant evidence: No