Question: Who directed the 2017 American erotic romantic drama based on E. L. James's novel that is the sequel to a 2015 American erotic romantic drama film directed by Sam Taylor-Johnson about a college graduate who begins a sadomasochistic relationship with young business magnate ? 
Sentence (from "Fifty Shades Darker (film)"): The film stars Dakota Johnson and Jamie Dornan as Anastasia Steele and Christian Grey, respectively, with Eric Johnson, Eloise Mumford, Bella Heathcote, Rita Ora, Luke Grimes, Victor Rasuk, Kim Basinger and Marcia Gay Harden in supporting roles.
Relevant evidence: No